Biology

=iSystem= May 25

A network in the world is Apple Inc. Apple Inc represents the cardiovascular system because it is spread all over the word, just like the cardiovascular system is all over a body. Apple has its "heart" or head office, located in California. Everything in the Apple network is run from the head office, as everything in the cardiovascular system is run from the heart. Coming off of the head office or heart in the cardiovascular system (CS) are retail stores all around the world, or arteries all around a body. The retail stores, or arteries, are controlled by the head office, like your heart controls everything else in the CS. Every time Apple makes a product it is designed and made in the head office, then shipped and sent to retail stores to be sold, like blood that is going to be sent around the body is filled with oxygen and made in the heart, then sent to arteries, or retail stores, and used. Apple Inc is a perfect example of the cardiovascular system. = = =Could a human live without a stomach?=

No, a human could not live without a stomach because you could not digest the food you eat or get the nutrients you need from the food to survive.



Digestive system This lesson is designed for you to use the Internet to learn about the digestive system. Type in the following address:[] Follow the instructions on the sheet to answer the questions. Remember to only click where the sheet tells you to. 1. What is digestion? The process of food being broken down through different parts of your body. 2. Click on** Mouth and Teeth**. What is the purpose of the teeth in the digestive system? Your teeth are the first process of the digestive system, they break down the food into smaller parts so that the stomach has an easier job. 3. What is** Saliva **used for and what helps it do it’s job? Saliva is a type of acid in your mouth that breaks down food like in the stomach. Enzyme, an acid in the saliva, helps break down the starch in the food. 4. Where does the food go next? The food travels down the esophagus next. 5. What is the purpose of the** tongue **in the digestive system? The tongue helps push the chewed food down the esophagus 6. Click on** Next **at the bottom. Name 2 ways food is broken down in the stomach. Food in the stomach is broken down by muscles and acid in the stomach. 7. How is the stomach protected? The Stomach is protected from acids in the stomach by lining. 8. Where does the food go next? The small intestine. 9. How long is it? 20 ft. 10. How does food move in the small intestine and what is this movement called? Food moves in the small intestine in a movement called peristalisis 11. What are** villi **and what do they do?** **Villi are small hairlike fingers lining the side of the side of the small intestine that help digest the food.** **The large intestine is the last section of the digestive system.** **13. Click on Next at the bottom. Read the information and write down how each of the following three organs aid in digestion: Pancreas: The pancreas is an organ that helps in digestion by creating enzymes that aid in digestion. Liver: The liver is the largest organ in the body that stores glycogen and creates Vitamin C. Alcohol is process in the liver. Gall Bladder:**
 * 12. What is the last section of the digestive system called?**
 * The Gall Bladder is a small sac under the liver that holds bile made by the liver.

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