Nerves and Digestion Chapter 6, Lesson 3
Do Now. In your own words (without the book), answer the following questions. 1. What is the nervous system? 2. What are the cells called that make up the nervous system? 3. What are the parts of the central nervous system? 4. What makes up the peripheral nervous system?
The Nervous System The Nervous System the control and communication system of the body. The command center of the nervous system is the brain. Brain the organ that controls your senses, thoughts, and actions. The brain is made up of thousands of neurons. Neurons cells that carry electrical messages.
The 3 Types Of Neurons 1. Sensory neurons take information from the outside world in so that we can understand what is going on around us. 2. Motor neurons neurons that take information from our brain to our muscles, glands, and organs. 3. Connecting neurons transmit messages between the sensory neurons and motor neurons.
Do Now Make a list of things that you can do to protect your nervous system.
The 2 Main Parts of the Nervous System The 2 Parts of the Nervous System are the central nervous system and the peripheral nervous system. 1. The Central Nervous System is made up of the brain and spinal cord. 2. The Peripheral Nervous System is made up of the nerves that branch out from the spinal cord to our peripheral body parts.
2 types of movement controlled by our nervous system. 1. Voluntary movements that we think about. 2. Involuntary movements that we do not have to think about.
Do Now Draw and label the picture on page #162 in your notes.
Figure 6.8 * The central nervous system contains the brain and spinal cord. They work together to send messages to the peripheral nervous system.
Parts of the Nervous System 1. Brain Control Center (sends out messages) Part of the Central Nervous System. 2. Peripheral Nerves The nerve pathways other than the brain and spinal cord. 3. Spinal Cord connected to the brain. Part of the Central Nervous System. 4. Cerebrum controls vision, touch, and other senses. 5. Cerebellum helps control balance and coordination. 6. Brain Stem Controls digestion, breathing, heartbeat. Links the brain and spinal cord.
Do Now. Take out your notes and number 1-8. Now, next to each number, write down the part of the digestive system that food goes through as it makes it way through the digestive system IN ORDER!!!!
The Digestive System Digestive System Breaks down the food you eat into a form that your body cells can use as fuel
Parts of the Digestive System 1. Salivary glands glands that produce saliva, a digestive juice containing enzymes 2. Esophagus Muscular tube leading to the stomach (food tube). 3. Liver gland that helps digest fat, maintain blood sugar levels, filter poisons 4. Stomach produces digestive juice and acid
5. Gallbladder organ that stores bile 6. Pancreas Gland that produces digestive enzymes 7. Small intestine Coiled tube connected to stomach where much of digestion takes place. 8. Colon Tube that collects solid waste; also called the large intestine.
Do Now: Now that you have seen the video and taken notes on the parts of the digestive system.. It is time to write the essay on the digestion of a cheerio. Please, describe the journey of a cheerio as it enters and leaves the body.
Digestive System: Starts with. 1. Chewing and mixing the chewed food with enzymes in saliva. THEN. 2. We swallow food into the muscular tube called the esophagus. THEN. 3. Food makes it to the stomach where it mixes with stronger acid in the churning stomach. THEN. 4. Food particles make it to the small intestine (THIS IS WHERE NUTRIENTS ARE ABSORBED INTO THE BLOOD)!
Excretory System: Whatever doesn t get absorbed by your small intestine becomes waste. Excretory System gets rid of some of the wastes your body produces and maintains fluid balance.
The Colon Food that can t be used by the digestive system goes to the colon. When the colon is full, our nerves begin to sense it, and it tells us we need to go to the bathroom.
The Kidneys and Bladder Kidneys filter the blood, removing water, and waste substances and maintaining the body s fluid balance. The bladder is where liquid waste material, or urine, from the kidneys is stored. When the bladder is full, nerves send a signal to the brain that it is time to go to the bathroom.