Assertion :PTH is a hypercalcemic hormone. Reason: PTH stimulates the process of bone resorption.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Parathyroid hormone (PTH) increases the $C a^{2 +}$ levels in the blood. PTH acts on bones and stimulates the process of bone resorption (dissolution/demineralisation). PTH also stimulates reabsorption of $C a^{2 +}$ by the renal tubules and increases $C a^{2 +}$ absorption from the digested food. It is, thus, clear that PTH is a hypercalcemic hormone, i.e., it increases the blood $C a^{2 +}$ levels.

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