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BIOD 151/A & P 1 Module 3 Exam questions and answers latest [100% correct answers]
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BIOD 151/A & P 1 Module 3 Exam questions and answers latest [100% correct answers]
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BIOD 151/A & P 1 Module 3 ExamQuestion 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.
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.
,3:
4:
7:
9:
10:
Your
Answer:
3: Stomach
4: Gallbladder
7: Jejenum
9: Appendix
10: Rectum
3: Stomach
,4: Gallbladder
7: Jejunum (not small intestine)
9: Appendix (not large
intestine) 10: Rectum (not large
intestine)
Question 4
pts
A patient is experiencing vitamin toxicity. What type of vitamin would be
causing this toxicity? Explain your answer.
A. Water soluble vitamin
B. Fat soluble vitamin
C. All of the
above Your
Answer:
Fat soluble vitamin. These vitamins are stored within the body's fat stores
making it harder for the body to rid itself of them. Therefore it can cause
vitamin toxicity.
B. Fat soluble vitamin.
Fat soluble vitamins are stored within the body’s fat stores making it harder for
the body to rid itself of them.
Question 5
pts
Explain which digestive system functions are carried out by the
large intestine. Your Answer:
Absorption: Water and electrolytes are reabsorbed and vitamins are
absorbed. Defecation ; Feces goes to the rectum then excreted va
anus.
Absorption: In the large intestine water and electrolytes are reabsorbed and
vitamins are absorbed.
Defecation: Feces travel to the rectum where it is excreted via the anus.
Question 6
pts
Note: Essay answers must clearly be in your own
,words. Answer the following essay question:
, Describe parietal cells and chief cells: name their location, secretions and
purposes. Your Answer:
Parietal cells located in the wall of stomach body secrete HCL acid,
generate a pH of 1.3-3.5. This acidite kills many bacteria. Also, the low pH
stops the activity of salivary amylase.Secretion of HCL acis is essential in
the activate of pepsin.
Chief cells produces pepsinogen. Pepsinogen is secreted by the chief cells in
the stomach. HCL acid converts the inactive pepsinogen into the active
enzyme pepsin and then it begins breakdown of proteins.
The parietal cells (located in the wall of the stomach body) secrete hydrochloric
acid, generating a pH of 1.3-3.5. This very acidic pH kills many of the bacteria
ingested along with food. In addition, the low pH stops the activity of salivary
amylase. The secretion of hydrochloric acid is essential in the activation of
pepsin.
Chief cells: secrete pepsinogen. Pepsinogen (a pre-enzyme) is secreted by the
chief cells in the stomach. Hydrochloric acid converts the inactive pepsinogen
(secreted by the chief cells) into the active enzyme pepsin which begins the
breakdown of proteins.
Question 7
pts
Match the digestive organ with the one substance it produces:
Large intestine
Vitamin K
Stomach
Pepsinogen
Small intestine
Secretin
Other Incorrect Match Options:
• Bile
• Salivary amylase
• Trypsin
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