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NEET MDS Quiz - Practice Test
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physiology - 3 Questions

1
Physiology

What is the primary effect of insulin on lipolysis?
1) Stimulation
2) Inhibition
3) No effect
4) Stimulation in the presence of glucose

📝 Explanation:

Answer: 2) Inhibition
Explanation: Insulin inhibits lipolysis by decreasing the activity of hormone-sensitive lipase in adipose tissue. This helps to maintain energy homeostasis by reducing the mobilization of fatty acids during periods of sufficient glucose availability.

2
Physiology

What is the function of cholecystokinin (CCK) in the digestive system?
1) Stimulates the release of bile from the liver
2) Increases the secretion of water in the collecting tubules of the kidney
3) Relaxes the lower esophageal sphincter
4) Decreases the motility of the small intestine

📝 Explanation:

Cholecystokinin (CCK) stimulates the release of bile from the liver and pancreatic enzymes, aiding in digestion.

3
Physiology

What is the function of the macula densa in the regulation of the nephron's function?
1) It secretes ADH to regulate water reabsorption.
2) It monitors sodium chloride concentration in the tubular fluid.
3) It produces erythropoietin to stimulate RBC production.
4) It is involved in the conversion of vitamin D to its active form.

📝 Explanation:

The macula densa monitors sodium chloride concentration in the tubular fluid, playing a crucial role in regulating kidney function.

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