Chapter 41: Alterations of Digestive Function

Chapter 41: Alterations of Digestive Function

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. Where in the brain is the vomiting center located?

a.	Hypothalamus	c.	Pons
b.	Medulla oblongata	d.	Midbrain

 

 

ANS:  B

The vomiting center of the brain lies in the medulla oblongata. The other locations listed are not related to vomiting.

 

PTS:   1                    REF:   Page 1424

 

2. Antiemetic agents, such as domperidone and haloperidol, are antagonists for which receptors?

a.	5-Hydroxytryptamine (5-HT) serotonin
b.	Histamine-2
c.	Acetylcholine
d.	Dopamine

 

 

ANS:  D

Metoclopramide, domperidone, and haloperidol are dopamine antagonists, making them effective antiemetic agents. This selection is the only option that identifies a receptor that is involved in the process of vomiting.

 

PTS:   1                    REF:   Page 1424

 

3. What type of vomiting is caused by the direct stimulation of the vomiting center by neurologic lesions involving the brainstem?

a.	Retch	c.	Duodenal
b.	Periodic	d.	Projectile

 

 

ANS:  D

Of the available options, only projectile vomiting is caused by the direct stimulation of the vomiting center by neurologic lesions, such as increased intracranial pressure, tumors, or aneurysms involving the brainstem.

 

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4. Considering the normal frequency of bowel evacuation, how infrequently can evacuation occur and still be considered within normal range?

a.	Once a day	c.	Once a week
b.	Once every 2 days	d.	Once every 2 weeks

 

 

ANS:  C

Normal bowel habits range from two or three evacuations per day to one per week.

 

PTS:   1                    REF:   Page 1428

 

5. How many stools per day are considered the upper limits of normal?

a.	Two	c.	Five
b.	Three	d.	Seven

 

 

ANS:  B

More than three stools per day is considered abnormal.

 

PTS:   1                    REF:   Page 1428