Digestive+System+HW-CMP

**Chapter 8 Digestive System**
1. Describe in your words the processes that occur in the digestive system (ingestion, digestion, movement, absorption, elimination) Indigestions is the act of your body breaking down food in order to retrieve its nutrients. It is mechanical when it is in the first phases (in your mouth and stomach) and then turns chemical when it reaches your intestines. Each organ the food moves through breaks it down more. Then the nutrients are absorbed and sent to different parts of the human body to serve their purposes.
 * 8.1 Overview of Digestion**

1. Describe the MECHANICAL and CHEMICAL digestion that occurs in the mouth. Mechanical digestion occurs in the mouth and stomach and chemical digestions occurs in the intestines. 2. What is heartburn? People get heartburn when stomach acid accidentally gets into the espohagus. 3. What is a dental cavity? (What causes it?) Bacteria in the mouth eat away at the teeth and cause it to break down. The bacteria come mostly from sugar in diets.
 * 8.2 First Part of the Digestive Tract**

1. What are the functions of the stomach and how is the wall of the stomach modified to perform these functions? The stomach is where food goes when it is first ingested. There, it is broken down, stored, and begins the digestion process. 2. What are the functions of the small intestine and how is the wall of the small intestine modified to perform these functions? The small intestine is the next big step of the digestion process. It digests all types of food and breaks them down into nutrients to keep and nutrients to defecate. 3. What is lactose intolerance? What causes it and what are the symptoms? It is a symptom in which people do not contain lactase, a necessary chemical in breaking down lactose. The symptoms are diarrhea, gas, bloating, and cramps.
 * 8.3 Stomach and Small Intestine**

1. What are the three main accessory organs and how do they assist the digestive process? The pancreas, liver and gallbladder are three main accessory organs. The pancreas breaks down the food, the liver removes toxic substances from blood and the gallbladder stores bile. 2. What is a gallstone? Liquids in the gallbladder harden and turn into a stone. 3. What is hepatitis? A disease of the liver. 4. What is cirrhosis? A chronic disease of the liver.
 * 8.4 Three accessory organs.**

1. What is the function of the large intestine? It prevents dehydration in the body. It absorbs water and forms feces for defecation. 2. Briefly describe the disorders of the large intestine: diarrhea, constipation, diverticulosis, hemorrhoids, IBS, IBD, polyps, cancer. Diarrhea is an infection of the lower intestine. Constipation is also an infection, but in the opposite way. Diverticulosis is a disease of muscoa.
 * 8.5 Large Intestine**