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THE DIGESTIVE SYSTEM

THE DIGESTIVE SYSTEM. By: Alyssa Deem. WHAT DOES THE DIGESTIVE SYSTEM DO?. The digestive system breaks down food into absorbable units that enter into the blood and are distributed into the body cells.

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THE DIGESTIVE SYSTEM

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  1. THE DIGESTIVE SYSTEM By: Alyssa Deem

  2. WHAT DOES THE DIGESTIVE SYSTEM DO? • The digestive system breaks down food into absorbable units that enter into the blood and are distributed into the body cells. • The foods that are not digestible are considered “waste” and are eliminated from the body as feces.

  3. MAJOR ORGANS AND THEIR ROLES. • Oral Cavity (Mouth): Food enters the body through the mouth and is chemically broken down by the saliva. • Esophagus: The esophagus is basically a passageway for the food to get from the mouth to the stomach. • Stomach: Once the food reaches the stomach, chemicals inside the stomach (gastric juices, hydrochloric acid, & enzymes) try to break down the food into smaller portions as they move around in the stomach for 3-4 hours. Once the food is broken down into a cream-like liquid called chyme, it is pushed out of the stomach and into the liver/gallbladder. • Liver/Gallbladder: The food is hit by more chemicals called bile. The bile breaks down the fat in our food to store for later use as energy. • Pancreas: Another chemical in the pancreas helps to break down the carbohydrates & the protein in our food. • Small Intestine: The small intestine mixes the food with more chemicals to make the food small enough to be used in our body. The tiny fingers (villi) absorbs the tiny molecules and sends it through our body through the passageway of blood. • Large Intestine: Any food that can not be digested through the body is sent to the large intestine. The main job of the large intestine is to get rid of water. The water is sent into the blood stream while the rest of the food molecules sit there for 12 hours and are later disposed through the rectum. • Rectum: The rectum is a storage place for the feces and lets the body know that it has feces that needs to be evacuated from the body. • Anus: When we are ready to defecate (use the restroom), the anus muscles help rid the feces from the body.

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