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What is the role of calcitriol?



Option: 1

Increases the production of RBCs in the bone marrow

Option: 2

Converts angiotensin I to angiotensin II

Option: 3

Promotes bone formation


Option: 4

Enhances the absorption of oxygen in the lungs

Answers (1)


Calcitriol is the active form of vitamin D, and it plays a crucial role in maintaining calcium and phosphorus balance in the body. Its primary function is to regulate the absorption of calcium and phosphorus from the small intestine.

When calcitriol is present, it enhances the absorption of calcium and phosphorus from the diet in the small intestine. This is achieved by increasing the expression of calcium and phosphorus transport proteins in the cells of the intestinal lining. As a result, more calcium and phosphorus are absorbed into the bloodstream, ensuring an adequate supply of these minerals for various physiological processes.

Option 3 is the correct answer.

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Anam Khan

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