The terminal portion of the small intestine is known as the ________.

ileum

The function of a lacteal is to ____________________.

Absorption of fats and other nutrients.

Pepsinogen, a digestive enzyme, is secreted by the ________.

Chief cells of the stomach.

In addition to storage and mechanical breakdown of food, the stomach ________.

Initiates protein digestion and denatures proteins.

True or False

Food is contained in the gastrointestinal tract from the time of ingestion until it is completely digested and the waste prepared for elimination.

True

The sheets of peritoneal membrane that hold the digestive tract in place are called ________.

Mesenteries

Which vitamin requires intrinsic factor in order to be absorbed?

B12

You have just eaten french fries, buttered toast, ice cream, and whole milk. Which of the following glands would be active in helping you to digest this food?

The pancreas

True or False

The submucosa is in direct contact with food.

False

Gastrin is a digestive hormone that is responsible for the stimulation of acid secretions in the stomach. These secretions are stimulated by the presence of ________.

Protein and peptide fragments

True or False

Some of the microbes that often invade other organs of the body are rarely found in the stomach. The reason for this is the presence of HCl.

True

Which of the following enzymes is specific for proteins?
A) dextrinase
B) amylase
C) trypsin
D) lipase

C. Trypsin

True or False

The gall bladder stores and releases bile, but does not produce it.

True

Pancreatic amylase does not get to the small intestine via the ________.

Cystic duct

Chyme is created in the ________.

Stomach

Digestion of which of the following would be affected the most if the liver were severely damaged?
A) lipids
B) carbohydrates
C) proteins
D) starches

A. Lipids

Which of the following is not true of saliva?
A) cleanses the mouth
B) contains enzymes that begin the breakdown of proteins
C) moistens food and aids in compacting of the bolus
D) dissolves food chemicals so they can be tasted

B. Contains enzymes that begin the breakdown of proteins

Which of these is not a component of saliva?
A) lysozyme
B) a cyanide compound
C) defensins
D) nitric oxide

D. Nitric oxide

The function of the hepatic portal circulation is to ________.

B. Collect absorbed nutrients for metabolic processing or storage

The major means of propelling food through the digestive tract is ________.

Peristalsis

Which of the following is NOT a characteristic of the stomach?
A) The stomach releases enzymes to digest carbohydrates.
B) The stomach mucosa is folded into rugae.
C) The stomach produces a double-layered coat of alkaline mucus.
D) The stomach has three layers of muscle in the muscularis tunic.

A. The stomach releases enzymes to digest carbohydrates.

What is the major digestive function of the pancreas?

Production of digestive enzymes

In the __________ phase of gastric secretion, chyme is moved into the duodenum.

Intestinal

Most digestion and absorption of nutrients occur in the __________.

Small Intestine

Which vitamins are made by the bacteria in the large intestine?

B complex and K vitamins

Which of the following processes occurs only in the large intestine?
A) Mechanical digestion
B) Absorption
C) Defecation
D) Deglutition

C. Defecation

An effective way to medically treat diarrhea would be to use a drug that ______.

Inhibits the activity of the myenteric nerve plexus

Which vitamin requires intrinsic factor in order to be absorbed?

B12

The final product of carbohydrate digestion is ____________________.

Glucose, fructose, and galactose

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.

mucosa, submucosa, muscularis externa, and serosa

What part of the tooth bears the force of chewing?

cementum

Parietal cells of the stomach produce ________.

Mucin

True or False

The major stimulus for production of intestinal fluid is distention or irritation of the intestinal mucosa by hypertonic or acidic chyme.

True

In addition to storage and mechanical breakdown of food, the stomach ________.

It is the first site where absorption takes place

Which of the following is not a phase of gastric secretion?
A) cephalic
B) gastric
C) intestinal
D) enterogastric

A. Cephalic

Nervous control of gastric secretion is provided by ________.

A. Somatic neurons in the spinal cord

Which of the following sphincters is under voluntary control?
A) Pyloric
B) Cardiac
C) Internal anal
D) External anal

D. External anal