DIGESTIVE QUIZZES

TRUE/FALSE Pepsinogen is the precursor to the gastric enzyme for protein digestion and is secreted by the parietal cells.

FALSE

Which of the following is not a component of the portal triad found at the edges of a liver lobule? - bile duct - hepatic artery - hepatic portal vein - central vein

central vein

After food and gastric juices combine, the gastric contents are referred to as

chyme

Which of the following is NOT true of saliva? - contains acids which aid in chemical digestion - moistens food and aids in compacting of the bolus - contains enzymes that begin the breakdown of carbohydrates - cleanses the mouth

contains acids which aid in chemical digestion

Bile salts aid in the digestion of fats by ________ large fat droplets.

emulsifying

Which of the following is an essential role played by large intestine bacteria? - produce gas - fermentation of indigestible carbohydrates - synthesize vitamins C and D - absorb bilirubin

fermentation of indigestible carbohydrates

The portion of the stomach that is superior to the junction between the stomach and the esophagus is the

fundus

Which of the following is not characteristic of the large intestine? It ________. - does not contain villi - exhibits external muscular bands called teniae coli - has pocket-like sacs called haustra - is longer than the small intestine

is longer than the small intestine

The ________ contains lobules with sinusoids (lined with macrophages) that lead to a central venous structure.

liver

What are the sites that produce enzymes involved in carbohydrates digestion?

mouth, small intestine, pancreas

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

Gastric pits are

openings into gastric glands.

Which digestive juice contains enzymes that break down carbohydrates, lipids, and proteins? - intestinal juice - gastric juice - pancreatic juice - bile

pancreatic juice

What are the enzymes involved in protein digestion?

pepsin, trypsin, brush border enzymes

The defecation reflex involves

relaxation of both the internal and external anal sphincters.

TRUE/FALSE Gastroesophageal (cardiac) sphincter surrounds cardial orifice and keeps orifice closed when food is not swallowed

TRUE

TRUE/FALSE The major means of propulsion through the alimentary canal is peristalsis.

TRUE

TRUE/FALSE The stomach has three layers of muscles in its wall. The third layer increases the physical breakdown.

TRUE

An enzyme that digests proteins into peptides is

trypsin

The absorptive effectiveness of the small intestine is enhanced by increasing the surface area of the mucosal lining. Which of the following accomplishes this task? - Brunner's glands and Peyer Patches - villi, and microvilli - the rugae and haustra - the vast array of digestive enzymes

villi, and microvilli