Exam 23: The Digestive System

Cells of the stomach that secrete HCl are ________ cells.

When we ingest large molecules such as lipids,carbohydrates,and proteins,they must undergo catabolic reactions whereby enzymes split these molecules.This series of reactions is called ________.

The circular folds of the small intestine enhance absorption by causing the chyme to spiral,rather than to move in a straight line,as it passes through the small intestine.

Figure 23.3 Using Figure 23.3, match the following: -Increases surface area for absorption via villi and microvilli.

What is heartburn and what causes it?

Figure 23.3 Using Figure 23.3, match the following: -Bacteria process undigested chyme from the small intestine.

Figure 23.1 Using Figure 23.1, match the following: -Continuation of the mesentery.

How is salivation regulated?

The part of the peritoneum that covers the external surfaces of most digestive organs is the ________ peritoneum.

Select the correct statement about electrolyte absorption.

Most gastric ulcers are due to excessive production of hydrochloric acid.

The ________ ligament anchors a tooth in the alveolus of the jaw.

The principal enzyme for breaking down carbohydrates is ________.

Match the following: -Process by which simpler chemical units pass through the lumen of the gastrointestinal tract into the blood or lymph.

Short-chain triglycerides found in foods such as butterfat molecules in milk are split by a specific enzyme in preparation for absorption.Which of the following enzymes is responsible?

Match the following: -Chemical or mechanical process of breaking down foodstuffs into simpler units.

Match the following: -Increases output of enzymatic-rich pancreatic juice.

From the esophagus to the anal canal,the walls of every organ of the alimentary canal are made up of the same four basic layers.Arrange them in order from the lumen.

Figure 23.1 Using Figure 23.1, match the following: -Duodenal glands found here.

Your friend suffers from heartburn and was told that he should "stop drinking caffeinated coffee because it is acidic." Explain to your friend why this is good advice but explain the mistaken facts to him.