77) Which of the following statements regarding the regulation of gastric secret

Question

77)

Which of the following statements regarding the regulation of gastric secretion and

motility are

true

?

I.

The sight, smell, taste, or thought of food can initiate the cephalic phase of

gastric activity.

II.

The gastric

phase begins when food enters the small intestine.

III.

Once activated, stretch receptors in the stomach trigger the flow of gastric juice

and peristalsis.

IV.

The intestinal phase reflexes inhibit gastric activity.

V.

The enterogastric reflex stimulates gastric empty

ing.

a)

I, III, IV

b)

II, IV, V

c)

I, IV, V

d)

I, II, V

e)

I, II, III, IV

9

7

)

Protein anabolism is promoted by:

a)

insulin

b)

somatotropin

c)

triiodothyronine

d)

cortisol

e)

all of the above except cortisol

98

)

A 65 yo male presents to you with difficulty breathing an

d a nonproductive cough. He

describes to you that he is a retired firefighter who “used to be in great shape”, but now

even walking up one flight of stairs leaves him “winded”. Blood tests reveal a slightly

lowered O

2

level, but a

re otherwise unremarkable. Spirometry reveals a significant

reduction in ERV/FEV

1.0

. Given only this information, what is your best diagnosis?

a)

pneumonia

b)

chronic bronchitis

c)

asthma

d)

emphysema

e)

influenza

99)

The residual volume is the amount of air

:

a)

remaining in the lungs after the lungs collapse

b)

that can be inhaled beyond the tidal volume

c)

remaining in the lungs after forced expiration

d)

contained in air spaces around the alveoli

e)

that can be exhaled beyond the tidal volume

100)

T

he release of feces

from the large intestine is dependent upon:

I.

stretching of the rectal walls

II.

voluntary relaxation of the external anal sphincter

III.

involuntary contraction of the diaphragm and abdominal muscles

IV.

activity of intestinal bacteria

V.

sympathetic stimulation of the int

estinal sphincter

a)

II, IV

,

V

b)

I, II

,

V

c)

I, II, III

,

V

d)

I and II

e)

III, IV

,

V

Explanation / Answer

77. ANS: True statements regarding the regulation of gastric secretion and motility:

I. The sight, smell, taste, or thought of food can initiate the cephalic phase of gastric activity.

III. Once activated, stretch receptors and chemoreceptors in the stomach trigger the flow of gastric juice and peristalsis.

IV. The intestinal phase reflexes inhibit gastric activity.

So the correct option is A. I, III, IV.

7. ANS: Protein anabolism is promoted by insulin, somatostatin and triodothyronine.

So the correct option is e. All of the above except cortisol.

98. question was not clear

99. ANS: Residual volume: The amount of air that remains in the lungs after a forced exhalation.

So the correct option is c. Remaining in the lungs after forced expiration.

100. ANS: The release of feces from the large intestine is dependent on the stretching of the rectal walls and voluntary relaxation of the external anal sphincter.

So the correct option is d. I and II.

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