The Human Digestive System

Transcription

1 The Human Digestive System Name: 1

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3 Digestion Video Questions 1. How many permanent teeth does a human adult have? 2. What does your digestive system do for you? 3. Where does digestion begin? 4. What does the bolus turn into in the stomach? It is a creamy disgusting paste. 5. What part of digestion is responsible for chemical digestion, absorption of carbohydrates, proteins, fats and lipids? 6. How long is the large intestine? 7. Name 1 accessory organ other than the teeth, tongue, and salivary glands? 8. Where is bile stored? 9. What system constantly removes waste from our bodies by forming urine? 10. What is the muscular tube that transports urine out of the body it is 8 inches long in the male and 1 ½ inches long in the female? 3

4 Digestion KWL Chart K W L What I Think I Know What I Want to Know What I Learned 4

5 Digestion Diagram Answers:

6 Food Is the Body's Fuel Source What's the first step in digesting food? Believe it or not, the digestive process starts even before you put food in your mouth. It begins when you smell something irresistible or when you see a favorite food you know will taste good. Just by smelling that homemade apple pie or thinking about how delicious that ice cream sundae is going to taste, you begin to salivate and the digestive process kicks in, preparing for that first scrumptious bite. If it's been a while since your last meal or if you even think about something tasty, you feel hungry. You eat until you're satisfied and then go about your business. But for the next 20 hours or so, your digestive system is doing its job as the food you ate travels through your body. Food is the body's fuel source. The nutrients in food give the body's cells the energy and other substances they need to operate. But before food can do any of these things, it has to be digested into small pieces the body can absorb and use. Almost all animals have a tube-type digestive system in which food enters the mouth, passes through a long tube, and exits as feces (poop) through the anus. The smooth muscle in the walls of the tube-shaped digestive organs rhythmically and efficiently moves the food through the system, where it is broken down into tiny absorbable nutrients. During the process of absorption, nutrients that come from the food (including carbohydrates, proteins, fats, vitamins, and minerals) pass through channels in the intestinal wall and into the bloodstream. The blood works to distribute these nutrients to the rest of the body. The waste parts of food that the body can't use are passed out of the body as feces. 6

7 Food Is the Body's Fuel Source Questions 1. What is the first step in digestion? 2. About how long does it take for food to move through the digestive system? a. 10 hours b. 45 hours c. 20 hours 3. Food is important for our bodies because. 4. Blood plays what role in the digestive process? 5. What happens to the waste parts of food that can t be used? 7

8 Fill in the Blank Digestive System Food comes into the body through the, is ground into smaller pieces by the and mixes with from the glands. The which is a muscle helps you to swallow food. When food is swallowed, the covers the windpipe allowing food to move towards the stomach using the. Food then enters the which is a sack like organ where the bolus is churned in acids and enzymes. The newly formed chyme enters into the first part of the small intestine called the. Bile from the and the aids in digestion in the duodenum. The chyme then enters into the and finally the which is the last part of the small intestine. The chyme that is not absorbed in the small intestine then moves into the which is the first part of the large intestine. As water and salts are absorbed the chyme moves through the first, the second, the third and finally the. The last part of the digestive system involves the where feces are stored before they exit the body through the. Word Bank: Stomach Cecum Anus Teeth Duodenum Liver Ileum Pancreas Mouth Esophagus Saliva Jejunum Salivary Transverse Colon Tongue Sigmoid Colon Descending Colon Epiglottis Stomach Ascending Colon Rectum 8

9 Write a Rap, Poem or Narrative 9

10 Digestive System Word Cloud 10

11 Mechanical and Chemical Digestion Comparison and Contrast Mechanical Both Chemical 11

12 Urinary System Coloring 12

13 Label the Urinary System 13

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