work of a strain of acid-resistant, corkscrew shaped H. pylori bacteria, which burrow like a drill bit through the mucus and destroy the protective mucosal layer. What is vomiting and how is it beneficial to health? ( 1 point ) Vomiting is the emptying of the stomach through the oral route. This may happen due to extreme stretching of the stomach or intestine or irritants such as bacterial toxins, excessive alcohol, spicy foods, and certain drugs. Pancreas: ( 2 points ) The pancreas produces pancreatic juices that contain most of the digestive ____ enzymes _____ for chemical digestion of food and bicarbonate ions that neutralize the hydrochloric acid in chyme. The pancreas synthesizes digestive enzymes and bicarbonate and secretes them into the ___ small ___ intestine. Describe the function of the following digestive enzymes. ( 3 points ) Trypsin- activated by trypsinogen, which is activated by enteropeptidase. Trypsin then activates more trypsinogen and other proteases to their active form so that they can work on breaking down proteins. Lipase- enzyme that breaks down dietary fats into smaller molecules called fatty acids and glycerol. Pancreatic amylase- produced in the exocrine part of the pancreas. Responsible for the digestion of the long chain polysaccharides into glucose, maltose, and other compounds. BIO 202-Chapter 23 assignment
Page 5 Liver: ( 3 points ) The reddish-brown liver, located in the upper ____ right ___ quadrant of the abdominal cavity, is the body’s largest internal organ. The liver is divided into right and left ____ lobes ____ and is enclosed by a fibrous capsule. The hepatic ___ portal ___ vein carries blood that rich in nutrients from the small intestine to the liver. Liver Functions: ( 4 points ) The liver carries on many diverse functions for the body. The liver filters the ____ blood ____, removing damaged red blood cells and foreign substances. The liver regulates carbohydrate, protein, and lipid metabolism. The liver also stores glycogen, iron, and vitamins ___ A ___, __ D __ and ___ B12 ___. The liver synthesizes and secretes bile. Hepatitis: What is hepatitis? ( 1 point ) Inflammation of the liver, often due to viral infection. What pathogen usually causes hepatitis? ( 1 point ) The viruses Hepatitis (A-F) virus causes hepatitis. How is hepatitis A spread? ( 1 point ) Usually through contaminated food and water. Bile: ( 2 points ) Bile is a yellowish-green liquid that includes water, bile salts, bile pigments, cholesterol, and electrolytes . Bile pigments are breakdown products of ____ bilirubin ____from red blood cells. Only the bile ____ salts ____ have a digestive function. What is this function? The function of bile salts is emulsifying fats into smaller droplets and aiding in the absorption of fatty acids, cholesterol and certain vitamins. Gallbladder: The gallbladder is a pear-shaped sac located near the liver and small intestine. This sac stores bile produced by the liver and releases bile into the small intestine during digestion.
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- Spring '17
- Gregory Katsaros