Exam 22: Nutrition and Digestion

Most nutrient absorption occurs in which part of the digestive system?

The epithelial cells lining the intestine have surface projections that increase the area for absorption.These projections are called ________.

The esophagus and trachea are both open to the ________.

The main function of salivary amylase is to ________.

How does Helicobacter pylori cause gastric ulcers in humans?

Modern humans possess the same craving for ________ and ________ as our ancestors,despite the obesity these cravings can cause today.

Which of the following mechanisms helps prevent gastric juice from digesting the stomach lining?

When the wall of the stomach fails to protect itself from erosion by gastric juice,the result is ________.

Muscular contraction moves food through the alimentary canal by a process called ________.

Together with the small intestine,the ________ absorbs water.

Which of the following nutrients begins undergoing chemical digestion in the mouth?

Your metabolic rate depends on ________. I)your age II)your activity levels III)genetics

________ the direct source of energy for cells.

Spiders are ________.

Use the following information to answer the following questions. There are many diseases of the digestive system. Sjögren's syndrome is an autoimmune disease that destroys tear ducts and salivary glands. In megaesophagus, peristalsis fails to occur properly and the esophagus is enlarged. In achlorhydria (also called "hypochlorhydria") production of gastric acid is absent or low. When a person has diverticulitis, feces are trapped in small pouches of the large intestine, and cause infection. Infected portions of the large intestine can swell and block the large intestine. In exocrine pancreatic insufficiency, there is a progressive loss of pancreatic cells that make digestive enzymes. In gallstone cholestasis, bile cannot flow from the liver to the duodenum. -Exocrine pancreatic insufficiency would show symptoms most similar to______.

Use the following information to answer the following questions. There are many diseases of the digestive system. Sjögren's syndrome is an autoimmune disease that destroys tear ducts and salivary glands. In megaesophagus, peristalsis fails to occur properly and the esophagus is enlarged. In achlorhydria (also called "hypochlorhydria") production of gastric acid is absent or low. When a person has diverticulitis, feces are trapped in small pouches of the large intestine, and cause infection. Infected portions of the large intestine can swell and block the large intestine. In exocrine pancreatic insufficiency, there is a progressive loss of pancreatic cells that make digestive enzymes. In gallstone cholestasis, bile cannot flow from the liver to the duodenum. -Regurgitation of food could indicate ________.

When contracted,________ prevents movement of chyme from the stomach to the small intestine.