CHAPTER 22: THE DIGESTIVE SYSTEM. Jayda Cortez Kimberly Navarro
|
|
- Alexis Townsend
- 5 years ago
- Views:
Transcription
1 CHAPTER 22: THE DIGESTIVE SYSTEM Jayda Cortez Kimberly Navarro
2 Objectives - Describe the functions of the organs that make up the digestive system - Identify and describe the four stages of food processing - Name and describe disorders and diseases of the digestive system.
3 Importance of the Digestive System/Function - Function: ensure proper digestion and absorption of nutrients Food are made up of complex molecules. -Digestive system take those complex molecules to break down into simple molecules for them to pass through the cell membranes.
4 The Four Stages of Food Processing - Ingestion: eating - Digestion: The breakdown of food to nutrients for the body to absorb. - Absorption: Nutrients go into the bloodstream - Elimination: Disposal of undigested material
5 The Mouth - Ingestion and preliminary steps of digestion take place here. - Mechanical digestion: Grinding of food. - Chemical digestion: Salivary glands excrete saliva to break down the bonds through enzymatic hydrolysis. - Tongue shapes food into a ball and pushes it to the back of the mouth.
6 Salivary Glands -Saliva: 1. Serous type: watery and contains enzymes (salivary amylase) 2. Mucous type: thick, slippery, and contains mucous; no enzymes; lubricates food during mastication -3 pairs of salivary glands: 1. Parotids: largest; produces serous type of saliva 2. Submandibular: produces both serous and mucous type of saliva; ducts open on either side of lingual frenulum 3. Sublingual: produce only mucous-type saliva; opens via 10 to 15 ducts into the floor of the mouth.
7 The Pharynx (throat) - Connects the mouth to esophagus. - Opens to the trachea. - Epiglottis ensures the food goes down the esophagus.
8 The Esophagus - Muscular tube that connects the pharynx to the stomach; about 25 centimeters (10 inches) long - Passageway for food--- moves food by peristalsis - Peristalsis: alternating waves of muscular contraction and relaxation that squeeze the food ball along the esophagus.
9 The Stomach - The stomach holds enough food to sustain us for a couple of hours. - Gastric juice is made of strong acid, digestive enzymes, and mucus. - Gastric juice mixes with food and produces chyme. - Mucus protects the stomach from digesting itself.
10 The Small Intestine - Approximately 7 meters long (20 feet); 2 cm or so in diameter - Divisions: 1. Duodenum 2. Jejunum 3. Ileum - Where greatest amount of digestion and absorption occurs - Wall--- contracts to produce peristalsis and segmentation movement - Digested nutrients are absorbed through intestinal walls - Has a lining covered with fingerlike projections called villi which are covered with smaller hairlike structures called microvilli. increases the surface area of villus for absorption of nutrients
11 Liver and Gallbladder - The liver produces bile, which is stored in the gallbladder. - Bile contains salts that keep fat into droplets to be digested faster.
12 Pancreas - Exocrine gland that lies behind the stomach - Pancreatic islets (of Langerhans) : secrete hormones glucagon and insulin into the blood - Produces juice that contains enzymes (such as amylase, protease, lipase) To break down carbohydrates, protein and fats. - Secretes pancreatic juice into pancreatic ducts
13 The Large Intestine - The main part is the colon, which is twice as wide as the small intestine. - Absorbs water from the alimentary canal. - Undigested materials solidify as water is absorbed. - Approximately 1.5 meters long.
14 Appendix - Hangs on the right side of the large intestine - Has no important digestive functions in humans Anus - The opening in the end of the alimentary canal; where feces is excreted - Regulate by 2 rectal sphincters ( 1 voluntary and 1 involuntary) when the voluntary sphincter is relaxed, contractions of the rectum expel feces
15
16 Nutrition and Metabolism - Cellular respiration breaks down molecules and extracts the energy. - Metabolic rate is the rate of energy consumption by the body amino acids make all proteins. 12 can be manufactured by the adult body. - Vitamins are organic molecules required in our diets. - Minerals are smaller chemical elements that are in the form of inorganic nutrients. - Essential fatty acids are fatty acids we cannot make, so we obtain them through our diet
17 Obesity - Too high body mass index (BMI: ratio of weight and height) - Cause: Eating more calories than you burn in (on a long-term basis) -poor diet, genetics, and lack of sleep, etc - an epidemic in the United States (about ⅓ of Americans are obese; ⅓ overweight) - Increases the risk of heart attack, diabetes and other several diseases.
18 Fun Facts - Average person produces 2 pints of saliva every day = 2 cans of soda - Food doesn t need gravity to get to your stomach. Because of peristalsis, food will be push down to the stomach even when you are upside down. - Small intestine is approximately 2,700 in. = Over half the size of the basketball court.
19 Citations Thibodeau, Gary A., Kevin T. Patton, and Catherine Parker Anthony. Structure & Function of the Body. 14th ed. St. Louis, MO: Elsevier/Mosby, Print. Moores, Danielle. "Obesity: Causes, Complications, and Diagnosis." Healthline. Healthline Media, 16 July Web. 21 Aug
Learning Targets. The Gastrointestinal (GI) Tract. Also known as the alimentary canal. Hollow series of organs that food passes through
Digestion the multistep process of breaking down food into molecules the body can use Learning Targets Describe the path food takes through the digestive system. Identify the major organs of the digestive
More informationThe process by which nutrient molecules pass through the wall of your digestive system into your blood. ABSORPTION AS RELATED TO DIGESTION
ABSORPTION AS RELATED TO DIGESTION The process by which nutrient molecules pass through the wall of your digestive system into your blood. 3 FUNCTIONS OF DIGESTION Breaks down food into molecules the body
More informationDIGESTION SBI 3C: NOVEMBER 2010
DIGESTION SBI 3C: NOVEMBER 2010 DIAGRAM OF DIGESTIVE SYSTEM: Mouth Esophagus Liver Gallbladder Large Intestine Appendix Stomach Pancreas Small Intestine Rectum Anus STAGES OF DIGESTION: 1. INGESTION Taking
More informationThe Digestive System. Prepares food for use by all body cells.
The Digestive System Prepares food for use by all body cells. Digestion The chemical breakdown of complex biological molecules into their component parts. Lipids to fatty acids Proteins to individual amino
More informationNURSE-UP DIGESTIVE SYSTEM AKA G.I. SYSTEM
NURSE-UP DIGESTIVE SYSTEM AKA G.I. SYSTEM The digestive system is used for breaking down food into nutrients which then pass into the circulatory system and are taken to where they are needed in the body.
More informationDigestive System. Digestive System. Digestion is the process of reducing food to small molecules that can be absorbed into the body.
Digestive System Digestion is the process of reducing food to small molecules that can be absorbed into the body. 2 Types of Digestion Mechanical digestion physical breakdown of food into small particles
More information- Digestion occurs during periods of low activity - Produces more energy than it uses. - Mucosa
Introduction Digestive System Chapter 29 Provides processes to break down molecules into a state easily used by cells - A disassembly line: Starts at the mouth and ends at the anus Digestive functions
More informationTHE DIGESTIVE SYSTEM
THE DIGESTIVE SYSTEM Composed of two parts: 1. 2. There are 4 main parts of digestion: 1. Ingestion: 2. Digestion: a. Mechanical Digestion: Example: b. Chemical Digestion: Example: 3. Absorption: 4. Egestion:
More informationLesson Overview The Digestive System
30.3 THINK ABOUT IT The only system in the body that food actually enters is the digestive system. So how does food get to the rest of the body after the process of digestion? Functions of the Digestive
More information- Digestion occurs during periods of low activity - Produces more energy than it uses. 3 Copyright 2016 by Elsevier Inc. All rights reserved.
Introduction Digestive System Chapter 29 Provides processes to break down molecules into a state easily used by cells - A disassembly line: Starts at the mouth and ends at the anus Digestive functions
More informationDigestive System. What happens to the donut you ate for breakfast this morning?
Digestive System What happens to the donut you ate for breakfast this morning? Free Tutoring and Extra Credit!!! Digestive System: Is the basic process of breaking down the food you eat into individual
More informationWhat is Digestion? The break down of food into molecules that are small enough to be absorbed and used by the body
Digestive System What is Digestion? The break down of food into molecules that are small enough to be absorbed and used by the body What is Digestion? This involves: Ingestion and propulsion of food along
More informationDigestive System 7/15/2015. Outline Digestive System. Digestive System
Digestive System Biology 105 Lecture 18 Chapter 15 Outline Digestive System I. Functions II. Layers of the GI tract III. Major parts: mouth, pharynx, esophagus, stomach, small intestine, large intestine,
More informationDigestive System. How your body obtains nutrients. Wednesday, March 2, 16
Digestive System How your body obtains nutrients Vocabulary Ingestion: food enters the system Physical and enzymatic breakdown begins Digestion: Further breakdown Chemical/enzymatic Vocabulary Absorption:
More information1. Three Main Functions. Chapter 19: 2. Two Groups of digestive organs. 2. Two Groups of digestive organs. 1. The Teeth 5/18/2015
1. Three Main Functions Chapter 19: General Structure and Function of the Digestive System Digestion-breakdown of food into small particles for transport to blood Absorption- into bloodstream to take to
More informationChapter 21 NUTRITION AND DIGESTION
Chapter 21 NUTRITION AND DIGESTION Stages of Food Processing 1. Ingestion: The act of eating. Usually involves placing food in mouth or oral cavity. 2. Digestion: Macromolecules in food (fats, proteins,
More informationTwo main groups Alimentary canal continuous coiled hollow tube Accessory digestive organs
Digestion Breakdown of ingested food Absorption of nutrients into the blood Metabolism Production of cellular energy (ATP) Constructive and degradative cellular activities Two main groups Alimentary canal
More informationThe Digestive System
The Digestive System s Big Book of Handouts Digestion and nutrition Specific Learning outcomes B11-2-01: Identify major structures and functions of the human digestive system from a diagram, model, or
More informationChapter 22 The Digestive System. Yoon Seo Orite, Jack Kohm, And Jackson Masuda
Chapter 22 The Digestive System Yoon Seo Orite, Jack Kohm, And Jackson Masuda Main Idea The digestive system breaks down ingested food and provides necessary nutrients to the body through various processes.
More informationHarvesting energy from food. Digestion: A Closer Look. Where digestion begins. Salivary Glands 4/17/13. Or how food gets from
Harvesting energy from food Or how food gets from to and body structures Cheese protein (a polymer of amino acids in a specific sequence) Breakdown of protein by human digestive system Amino acid monomer
More informationThe Digestive System. Chapter 25
The Digestive System Chapter 25 Introduction Structure of the digestive system A tube that extends from mouth to anus Accessory organs are attached Functions include Ingestion Movement Digestion Absorption
More informationIncludes mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, anus. Salivary glands, liver, gallbladder, pancreas
Chapter 14 The Digestive System and Nutrition Digestive System Brings Nutrients Into the Body The digestive system includes Gastrointestinal (GI) tract (hollow tube) Lumen: space within this tube Includes
More informationORGANS OF THE DIGESTIVE SYSTEM
ORGANS OF THE DIGESTIVE SYSTEM OBJECTIVES: 1. List and describe the major activities of the digestive system. 2. Identify and give the functions of the organs in and along the digestive tract. MAJOR ACTIVITIES
More informationDIGESTIVE SYSTEM CLASS NOTES. tube along with several
DIGESTIVE SYSTEM CLASS NOTES Digestion Breakdown of food and the of nutrients in the bloodstream. Metabolism Production of for and cellular activities. The digestive system is composed of the canal which
More informationRebel Biology - Nutrition. organisms need a variety of nutrients to perform life s activities. carbs, proteins. vitamins, water,
Rebel Biology - Nutrition organisms need a variety of nutrients to perform life s activities the most important ones are fats, carbs, proteins vitamins, water, these either provide direct value(fats/carbs/proteins)
More informationDigestive System. Unit 6.11 (6 th Edition) Chapter 7.11 (7 th Edition)
Digestive System Unit 6.11 (6 th Edition) Chapter 7.11 (7 th Edition) 1 Learning Objectives Identify the major organs of the digestive system. Explain the locations and functions of three organs in the
More information1. Three Main Functions. Chapter 19: 2. Two Groups of digestive organs. 2. Two Groups of digestive organs 6/1/2015. The Wall of the Digestive Tract
1. Three Main Functions Chapter 19: General Structure and Function of the Digestive System Digestion-breakdown of food into small particles for transport to blood Absorption- into bloodstream to take to
More informationHuman Digestive System
3.3.4 Human Digestive System Need to know The functions of the main parts of the alimentary canal and the associated glands Function of teeth. The human dental formula Role of mechanical digestion and
More informationBiology 20: Digestive System Did you get it? Questions and Answers
Biology 20: Digestive System Did you get it? Questions and Answers Mouth 1. What is the purpose of chewing? a. break food into smaller pieces so there is a greater SA for chemicals to work on. 2. Salivary
More informationThe Digestive System
The Digestive System Key words Pharynx oesophagus stomach intestine epiglottis gall bladder Pancreas peristalsis liver enzyme rectum sphincter Pyloric duodenum jejunum ileum bile lipase Amylase trypsin
More informationThe Digestive System. Parts and Functions
The Digestive System Parts and Functions Mechanical Digestion A process of digestion in which food is cut, torn, mashed, and churned into smaller bits. This process starts in the mouth and ends in the
More informationPurpose To reduce the size of large pieces of food to small molecules that can be absorbed into the blood stream and eventually into cells.
Purpose To reduce the size of large pieces of food to small molecules that can be absorbed into the blood stream and eventually into cells. Cells are then able to maintain homeostasis 6 main components
More informationHuman Biology. Digestive System
Human Biology Digestive System Digestion - Defined Prepares food for use by all body cells The physical and/or chemical breakdown of food Did you know: the average person eats more than 500kg of food per
More information10/23/2013 ANIMAL NUTRITION ANIMAL NUTRITION ESSENTIAL NUTRIENTS AN ANIMAL S DIET MUST STUPPLY: AMINO ACIDS
ANIMAL NUTRITION Food is taken in, taken apart, and taken up in the process of animal nutrition In general, animals fall into three categories: Herbivores Carnivores Omnivores ANIMAL NUTRITION Chapter
More informationMonday, October Pick up a little man from the front table. Color and glue it into your journal on the next available page.
1. Pick up a little man from the front table. Color and glue it into your journal on the next available page. 2. Answer the following question on the same page: How do proteins, lipids and carbs impact
More informationChapter 8: Digestion. Structure and Functions of Digestive Organs Macronutrients Digestive Enzymes
Chapter 8: Digestion Structure and Functions of Digestive Organs Macronutrients Digestive Enzymes What organisms need Digestion? Heterotrophs - rely on ingestion of organic molecules for production of
More informationChapter 9: Digestion Review Assignment
_ Date: Mark: /45 Chapter 9: Digestion Review Assignment 45 Multiple Choice = 45 Marks Identify the choice that best completes the statement or answers the question. 1. Which of the following roles do
More informationLecture 2 Digestive System &Nutrition Lecture 3 1. Introduction 2. Digestive System 3. Nutrition Basics
Lecture 2 Digestive System &Nutrition 1 Lecture 3 1. Introduction 2. Digestive System 3. Nutrition Basics 2 1 Introduction Some Ecology 3 Mr. Sun 4 2 Nuclear Fusion 5 Light energy from Sun radiates across
More informationDigestive System. Why do we need to eat? Growth Maintenance (repair tissue) Energy
Digestive System Why do we need to eat? Growth Maintenance (repair tissue) Energy Nutrients Nutrient = chemical that must be obtained by an organism from it s environment in order to survive; nutrients
More informationIntroduction to Human Anatomy & Physiology Chapter 35
Biology Introduction to Human Anatomy & Physiology Chapter 35 Digestion The breakdown of complex biological molecules into their component parts. Lipids to fatty acids Proteins to individual amino acids
More informationDigestive System Anatomy
Digestive System Anatomy The Process of Digestion http://www.youtube.com/watch?v=j84pqg 8nf0M Parts of the Digestive System The digestive system begins at the mouth, where food enters the body. The mouth
More informationDigestive System Lecture Notes Read Ch 14; review questions start on page 477 S/A # 4, 5, 7, 8, 10, 11, 12, 13, 16, 17, 19, 20, 21, 22, 26, 35
The PRINCIPLE structure of the digestive system is the Alimentary Canal (Gastrointestinal Tract) = hollow tube much like a hallway in a home. I. Functions of the Digestive System a. Ingestion: Putting
More informationKRISHNA TEJA PHARMACY COLLEGE HUMAN ANATOMY AND PHYSIOLOGY. DIGESTIVE SYSTEM Dr.B.Jyothi
KRISHNA TEJA PHARMACY COLLEGE HUMAN ANATOMY AND PHYSIOLOGY DIGESTIVE SYSTEM Dr.B.Jyothi Prof, Dept. Of Pharmacology KTPC The Digestive System Food undergoes six major processes: 1. Ingestion : process
More informationUNIT 3. DIGESTIVE AND RESPIRATORY SYSTEM.
1 UNIT 3. DIGESTIVE AND RESPIRATORY SYSTEM. 2 1. DIGESTIVE SYSTEM 1) Which are the relationships between cellular respiration and the systems that perform nutrition in human body? Digestive system processes
More informationWebsite: websites.rcc.edu/halama Lecture 2 Digestive System &Nutrition
Website: websites.rcc.edu/halama Lecture 2 Digestive System &Nutrition 2 1 Lecture 3 1. Introduction 2. Digestive System 3. Nutrition Basics 3 Introduction Some Ecology 4 2 Mr. Sun 5 Nuclear Fusion 6 3
More informationAFTER mechanical digestion, the pieces of food are still to be used by. broken down. the cells. They MUST be EVEN MORE!!!!!!
Chemical Digestion ***ANSWERS**** Name Period Date AFTER mechanical digestion, the pieces of food are still to be used by the cells. They MUST be EVEN MORE!!!!!! Special
More informationThe Digestive System
Digestive System 1 Name The Digestive System Purpose: To describe how food moves through the digestive system. To identify the parts of the digestive system. Background Information: Food provides us with
More informationThe Digestive System. Chapter 16. Introduction. Overview of Digestive System. Histological Organization. Movement and Mixing of Digestive Materials
The Digestive System Chapter 16 Introduction Structure of the digestive system A tube that extends from mouth to anus Accessory organs are attached Functions include Ingestion Movement Digestion Absorption
More informationThe Digestive System: Basics. WedNesday October 24th All organisms need energy to survive. > Use energy to reproduce, grow, and repair
WedNesday October 24th 2012 QU: What would happen if an organism stopped eating? OBJ: Digestive System Notes All about hydrolysis and surface area Digestive System All organisms need energy to survive
More informationChapter 26 The Digestive System
Chapter 26 The Digestive System Digestive System Gastroenterology is the study of the stomach and intestine. Digestion Catabolism Absorption Anabolism The actions of the digestive system are controlled
More informationCh41 Animal Nutrition
Ch41 Animal Nutrition Digestive system Purpose = break down food into smaller nutrients to be used in the body for energy and raw materials for biosynthesis Overview of food processing Ingestion: act of
More informationNext week in lab: Diet analysis
Next week in lab: Diet analysis Record everything you eat or drink and the amount for 24 hr (1 day) Analyze your diet using fitday.com Print out & bring to lab 1. Food list 2. Calories table & pie chart
More informationANATOMY & PHYSIOLOGY ONLINE COURSE - SESSION 13 THE DIGESTIVE SYSTEM
ANATOMY & PHYSIOLOGY ONLINE COURSE - SESSION 13 THE DIGESTIVE SYSTEM The digestive system also known as the alimentary canal or gastrointestinal tract consists of a series of hollow organs joined in a
More informationDigestive System Notes. Biology - Mrs. Kaye
Digestive System Notes Biology - Mrs. Kaye Digestion There are two kinds of digestion: Mechanical digestion - the physical breakdown of food into smaller pieces to increase surface area for more enzyme
More informationPPL2O Human Digestion The human digestive system is a complex process that consists of breaking down large organic masses into smaller particles that
PPL2O Human Digestion The human digestive system is a complex process that consists of breaking down large organic masses into smaller particles that the body can absorb and use. The breakdown of the nutrients
More informatione. Undigested material is compacted and stored until the colon is full. When the colon is full, a signal to empty it is sent by sensors in the walls
Digestive System 1. General a. Animals obtain energy by breaking food molecules into smaller pieces. b. The basic fuel molecules are amino acids, lipids and sugars c. Digestion is the chemical breakdown
More informationThe Digestive System
The Digestive System Identify the Structure and Function. Mesentery of the Large Intestine The mesentery functions to connect the visceral organs to the abdominal wall. Identify the Structure. Nasal Cavity
More informationThe Human Digestive Tract
The Human Digestive Tract The Mouth salivary glands (parotid, sublingual, submaxillary) - produces saliva --->lubricate food ---> dissolves food particles ---> allows us to taste food --->contains amylase
More informationThe Digestive System
Digestive System 1 Name The Digestive System Purpose: To describe how food moves through the digestive system. Materials: Markers Ruler 1,000 cm string Map Pencils Digestive Organ Mouth 11 Esophagus 25
More information4/8/16. Digestive System. When you are hungry it is because your brain receives a signal from your cells that they need energy
When you are hungry it is because your brain receives a signal from your cells that they need energy Section 1 Digestive System A group of organs that work together to digest food so that it can be used
More informationThe Small Intestine. The pyloric sphincter at the bottom of the stomach opens, squirting small amounts of food into your small intestine.
The Small Intestine The pyloric sphincter at the bottom of the stomach opens, squirting small amounts of food into your small intestine. approximately six metres (the longest section of your digestive
More informationAFTER mechanical digestion, the pieces of food are still to be used by broken down. the cells. They MUST be EVEN MORE!!!!!!
Chemical Digestion Name Period Date AFTER mechanical digestion, the pieces of food are still to be used by broken down the cells. They MUST be EVEN MORE!!!!!! Special
More informationNOTES: CH 41 Animal Nutrition & Digestion
NOTES: CH 41 Animal Nutrition & Digestion NUTRITION *Nutrition is the study of nutrients and how the body utilizes them! *ESSENTIAL NUTRIENTS: nutrients that human cells cannot synthesize (i.e. certain
More information1 ANIMALS Digestive System Oral Cavity and Esophagus.notebook January 06, 2016
The Human Digestive System 1 The Human Digestive System 2 You are a tube inside a tube 3 The Digestive System The Four Stages of Food Processing 1. Ingestion the taking in or eating of food 2. Digestion
More informationNutrition and Digestion
Nutrition and Digestion Classes of Nutrients Carbohydrates Lipids Proteins Minerals Vitamins Water Macronutrients Carbon-containing compounds Energy and raw material Includes carbohydrates, lipids, & proteins
More information10/18/2017 ANIMAL NUTRITION ANIMAL NUTRITION ESSENTIAL NUTRIENTS AN ANIMAL S DIET MUST STUPPLY: AMINO ACIDS
ANIMAL NUTRITION Food is taken in, taken apart, and taken up in the process of animal nutrition In general, animals fall into three categories: Herbivores Carnivores Omnivores ANIMAL NUTRITION Chapter
More informationAll organisms must obtain and process essential nutrients (food) *** Exception: Venus Fly Traps undergo photosynthesis but needs source of nitrogen
All organisms must obtain and process essential nutrients (food) AUTOTROPHS self feeder makes their own food eg. Plants do not require a digestive tract *** Exception: Venus Fly Traps undergo photosynthesis
More information* Produces various chemicals to break. down the food. * Filters out harmful substances * Gets rid of solid wastes
* * Produces various chemicals to break down the food * Filters out harmful substances * Gets rid of solid wastes * *Mouth *Pharynx *Oesophagus *Stomach *Small and large intestines * *Changes the physical
More informationBiology 12 - Digestion Notes
Biology 12 - Digestion Notes Anatomy Physiology Functions of the Digestive System -------------------------------------------------------------------------------------- food (enzymes, bile, HCl) to assist
More informationGlencoe Health. Lesson 3 The Digestive System
Glencoe Health Lesson 3 The Digestive System Health espotlight Video BIG IDEA The digestive system provides nutrients and energy for your body through the digestion of food. New Vocabulary mastication
More informationDIGESTIVE SYSTEM ALIMENTARY CANAL / GI TRACT & ACCESSORY ORGANS. Mar 16 10:34 PM
DIGESTIVE SYSTEM ALIMENTARY CANAL / GI TRACT & ACCESSORY ORGANS Mar 16 10:34 PM 1 I. Digestive System Functions > Ingestion the taking in of food > Propulsion movement caused by force > Digestion breakdown
More information3/16/2016. Food--mixture of carbohydrates, proteins, and lipids
Food--mixture of carbohydrates, proteins, and lipids Food being broken down into small molecules Takes place in the alimentary canal Complete digestive system 4 layers of tissue (in book) Lumen 1) MECHANICAL/PHYSICAL--
More informationDigestive Tract. Also called alimentary canal or gastrointestinal tract. stomach small intestine large intestine - anus
Digestive Tract Also called alimentary canal or gastrointestinal tract Mouth pharynxepiglottis- esophagus stomach small intestine large intestine - anus Digestive Tract Digestion: The mechanical and chemical
More information(*) (*) Ingestion, digestion, absorption, and elimination. Uptake of nutrients by body cells (intestine)
Human Digestive System Food is pushed along the digestive tract by peristalsis the rhythmic waves of contraction of smooth muscles in the wall of the canal Accessory glands. Main stages of food processing
More informationDigestion and Excretion
Digestion and Excretion The Digestive System What do you think? Read the two statements below and decide whether you agree or disagree with them. Place an A in the Before column if you agree with the statement
More informationPrinciples of Anatomy and Physiology
Principles of Anatomy and Physiology 14 th Edition CHAPTER 24 The Digestive System Introduction The purpose of this chapter is to Identify the anatomical components of the digestive system as well as their
More informationChapter 14: The Digestive System
Chapter 14: The Digestive System Digestive system consists of Muscular tube (digestive tract) alimentary canal Accessory organs teeth, tongue, glandular organs 6 essential activities 1. 2. 3. 4. 5. 6.
More informationEnergy, Chemical Reactions and Enzymes
Phosphorylation Hydrolysis Energy, Chemical Reactions and Enzymes Chapter 2 (selections) What is Energy? Energy is the capacity to do work Potential Energy Kinetic Energy Chemical Bond Energy Like a rechargeable
More informationBELLWORK DEFINE: PERISTALSIS CHYME RUGAE Remember the structures of the digestive system 1
BELLWORK DEFINE: PERISTALSIS CHYME RUGAE 2.07 Remember the structures of the digestive system 1 STANDARD 8) Outline basic concepts of normal structure and function of all body systems, and explain how
More informationCh 7 Nutrition in humans
Ch 7 Nutrition in humans Think about (Ch 7, p.2) 1. The stomach churns food into smaller pieces physically. The stomach wall secretes proteases to chemically digest proteins. It also releases hydrochloric
More informationNutrients and Digestion
Nutrients and Digestion Nutrition what is needed to be taken in to keep the body healthy Essential Nutrients Carbohydrates Fats Proteins Minerals Vitamins Water Carbohydrates Types of sugars combined in
More informationHuman Organ Systems. Circulatory, Respiratory, Digestive
Human Organ Systems Circulatory, Respiratory, Digestive The Circulatory System The circulatory system picks up and transports nutrients and oxygen to all the cells in the body, and carries wastes to the
More informationObjective 4- Digestion
Objective 4- Digestion 1. Describe why cells require nutrients Supply energy for metabolism (cell activities), matter for synthesis of new materials, cell reproduction, secretion and to regulate cell processes
More information1) Four main feeding mechanisms of animals a) Suspension feeders i) (1) Humpback whales b) Substrate feeders i)
1 AP Biology March 2008 Digestion Chapter 41 Homeostatic mechanisms manage an animal s energy budget. 1) Four main feeding mechanisms of animals Suspension feeders (1) Humpback whales Substrate feeders
More informationPrimary Function. 1. Ingestion: food enters the system
Digestive System Primary Function 1. Ingestion: food enters the system - Physical and enzymatic breakdown begins 2. Digestion: Further breakdown - Chemical/enzymatic 3. Absorption: Nutrients enter circulatory
More informationNutrition. Autotrophs. plants, some protists & bacteria producers
Nutrition Autotrophs plants, some protists & bacteria producers Nutrition Heterotrophs animals, fungi, some protists & bacteria consumers Animal Nutrition Most obtain food by ingestion take in their food
More informationNutrition, part 2. Because 1 part isn t enough!
Nutrition, part 2 Because 1 part isn t enough! 4. Calories and Caloric Intake Calories per gram of our Macro and Micro nutrients Macro Carbohydrates: 4 cal/g Fats: 9 cal/g Proteins: 4 cal/g Micro Vitamins:
More informationThe Digestive System. Basic process of digestion. Mouth and Teeth 10/30/2016
The Digestive System Basic process of digestion 1. Ingestion: animal eats food. 2. Digestion: animal body breaks food down. Mechanical digestion: chewing (mastication). Chemical digestion: enzymes and
More informationDigestive System. Physical and breakdown begins. : Further breakdown, chemical/enzymatic
SBI 3C Digestive System : food enters the system Physical and breakdown begins : Further breakdown, chemical/enzymatic : Nutrients enter system, delivered to tissues of the body Elimination of Waste (
More informationDigestion Introduction Lecture MMHS Science Chitraroff
Digestion Introduction Lecture MMHS Science Chitraroff Digestion is the process that changes food into a form that is usable by your body. The Alimentary Canal The pathway of food from your mouth to your
More information2. A digestive organ that is not part of the alimentary canal is the: a. stomach b. liver c. small intestine d. large intestine e.
Chapter 14 The Digestive System and Body Metabolism Review Questions Multiple Choice: 1. Which of the following terms are synonyms? a. Gastrointestinal tract b. Digestive system c. Digestive tract d. Alimentary
More informationFull file at
An. Dif. Page(s) Multiple Choice Chapter 2 Digestion and Absorption c K 39 1. Another name for the digestive tract is the: a. urinary tract. b. exocrine system. c. gastrointestinal system. d. muscular
More informationDigestive System Processes
Unit 7 Digestive System Processes ESSENTIALS OF HUMAN ANATOMY & PHYSIOLOGY Processes of the Digestive System Ingestion- getting food into the mouth Propulsion- moving foods through the digestive system
More information1. Animals are heterotrophs that require food for fuel, carbon skeletons, and essential nutrients: an overview
1. Animals are heterotrophs that require food for fuel, carbon skeletons, and essential nutrients: an overview A nutritionally adequate diet satisfies three needs: fuel (chemical energy) for all the cellular
More informationSNC4M The Digestive System
SNC4M The Digestive System What is digestion? Chemical and mechanical breakdown of organic molecules into units small enough for the body to absorb These molecules provide: 1. Energy resources 2. Essential
More informationStudent Exploration: Digestive System
Name: Date: Student Exploration: Digestive System Vocabulary: absorption, amino acid, carbohydrate, chemical digestion, chyme, complex carbohydrate, digestion, digestive system, elimination, enzyme, fat,
More informationTHE DIGESTIVE SYSTEM THE FOUR STEPS OF DIGESTION
THE DIGESTIVE SYSTEM WHAT IS THE DIGESTIVE SYSTEM? the digestive system is a long, muscular tube The entire system is approximately 9m in length and is usually a one way tract WHY DO WE NEED A DIGESTIVE
More informationPOGIL Activity on The Digestive System (Let s go Down the Hatch! )
POGIL Activity on The Digestive System (Let s go Down the Hatch! ) Life is organized in the following levels: Chemical Level, Cellular Level, Tissue Level, Organ Level, Organ System Level, and finally,
More informationUNIT 2: From Food to Fuel: How the Human Body Utilizes Food
UNIT 2: From Food to Fuel: How the Human Body Utilizes Food Introduction to the Digestive System PART ONE Systems of the Body The Digestive System Also referred to as alimentary system, the gut, gastrointestinal
More informationDigestion. I. What is digestion? II. Enzymes involved in digestion
Digestion I. What is digestion? Digestion is the breakdown of large, insoluble food molecules into small, soluble food molecules so that they can be absorbed into the bloodstream. Large food molecules
More information