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Post-Test
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1
Which of the following is not considered an accessory organ of the digestive system?
A)salivary glands
B)liver
C)pancreas
D)stomach
2
Which of the following statements concerning the GI tract is false?
A)The esophagus is lined with stratified squamous epithelium.
B)The muscle layer of the upper esophagus contains skeletal muscle.
C)The lower esophageal sphincter is a very thick band of smooth muscle.
D)The esophageal glands secrete lubricating mucus.
3
Which of the following is not retroperitoneal?
A)ileum
B)pancreas
C)duodenum
4
During the process of mastication, the muscles which move the jaws to cause the grinding and crushing actions of the teeth include all of the following except ________________.
A)medial pterygoid
B)masseter
C)buccinator
D)lateral pterygoid
E)temporalis
5
Which of the following statements concerning the tongue is false?
A)The tongue occupies parts of both the oral cavity and oropharynx.
B)The tongue contains lymphatic tissue (a lingual tonsil).
C)The tongue contains glands that secrete a portion of the saliva.
D)The tongue is composed of 80% smooth muscle and 20% elastic fibers.
6
In the esophagus, a reflex response called peristalsis occurs when a bolus of food stimulates the stretch receptors. Which of the following is not part of this response?
A)The circular muscle behind the bolus contracts.
B)The longitudinal muscle behind the bolus contracts.
C)The circular muscle in front of the bolus relaxes.
D)The longitudinal muscle in front of the bolus contracts.
7
During the gastric phase ingested food stimulates
A)a reflex in the myenteric plexus.
B)a reflex mediated via the vagus nerves and brainstem.
C)an increase in the pH of the stomach contents.
D)All of the above.
8
Which cells of the gastric mucosa secrete pepsinogen?
A)enteroendocrine cells
B)mucous cells
C)chief cells
D)parietal cells
9
This hormone stimulates pepsinogen and HCl production.
A)secretin
B)gastrin
C)CCK
D)insulin
10
The arrival of chyme containing a mixture of fats, carbohydrates, and proteins into the duodenum over a period of time would cause
A)an increase in secretin release from the duodenum.
B)diminished gallbladder contractions.
C)a decrease in bicarbonate secretion from the pancreas.
D)a decrease in CCK secretion.
E)a parasympathetic reflex which would promote gastric contractions.
11
All of the following are functions of cholecystokinin (CCK) except it
A)stimulates gallbladder contraction.
B)promotes secretion of pancreatic enzymes.
C)increases gastric HCl production.
D)induces the movement of bile into common bile duct.
E)causes hepatopancreatic sphincter to relax.
12
In what organ would you find the falciform ligament?
A)stomach
B)small intestine
C)esophagus
D)liver
13
These glands produce bicarbonate-rich mucus, which neutralizes stomach acid.
A)Peyer's patches
B)brunner glands
C)islets of Langerhans
D)Paneth cells
14
If an older person is having diarrhea and gas when they drink too much milk, what enzyme are they not producing on their brush border?
A)maltase
B)lactase
C)carboxypeptidase
D)gastric lipase
E)rennin
15
Which of the following is not an enzyme that digests proteins in the small intestine?
A)maltase
B)aminopeptidase
C)dipeptidase
D)carboxypeptidase
16
This gastric secretion breaks proteins down into smaller peptide chains.
A)lipase
B)intrinsic factor
C)pepsin
D)rennin
17
This brush border enzyme will complete polypeptide digestion.
A)pepsin
B)aminopeptidase
C)sucrase
D)trypsin
18
Chemical digestion of proteins begins in the ________________.
A)mouth
B)stomach
C)small intestine
D)large intestine
19
The appendix
A)contains lymphocytes.
B)contains a bacterial flora which synthesizes vitamin K.
C)is an accessory organ which secretes digestive enzymes.
D)is the sphincter that joins the small intestine and large intestine.
20
Which of the following does not occur within the large intestine?
A)synthesis of vitamin K
B)absorption of water and electrolytes
C)secretion of mucus
D)digestion of cellulose by digestive enzymes





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