BIOD 151: M3: EXAM- REQUIRES RESPONDUS LOCKDOWN BROWSER Q & A

BIOD 151: M3: EXAM- REQUIRES RESPONDUS
LOCKDOWN BROWSER Q & A




Question 1
pts


Explain why someone who has hypergastrinemia (excessive secretion of
gastrin) might develop gastric/stomach ulcers.

Your Answer:

Gastrin stimulates the secretaion of pepsinogenes and HCL. If it is excess
amounr that means it would be lead to erosion of the stomach.

Gastrin stimulates the secretions of pepsinogens and hydrochloric acid. Excess
amounts would lead to erosion of the stomach lining.



Question 2
pts


Explain in detail how the stomach contents enter the small
intestine. Your Answer:
There is the pyloric sphincter at thebase of stomach. Therefore, this valve
relaxes causing a small quantity of chyme to pass the opening into the first
part of small intestine. And then, this initiates a reflex. That is why the
muscles of the sphincter to contrcat and close the openinf temporarily. After
sphincter relaxes again and it allows more chyme to enter.
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,The pyloric sphincter (valve), located at the base of the stomach, relaxes causing
a small quantity of chyme to pass through the opening into the first part of the
small intestine.
This initiates a reflex that causes the muscles of the sphincter to contract and
close the opening temporarily. Then the sphincter relaxes again and allows more
chyme to enter.



Question 3
pts


Look carefully at the diagram below. Label the following 5 organs of the
digestive system.

To receive credit for the intestines you must label the specific region.




2

, 3:

4:

7:

9:

10:




Your
Answer:

3: Stomach
3