How does the parathyroid hormone (PTH) increa | vedclass

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(D) The parathyroid hormone $(PTH)$ is a peptide hormone secreted by the parathyroid glands that plays a crucial role in calcium homeostasis.$1$. It a

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All of the above.

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(D) The parathyroid hormone $(PTH)$ is a peptide hormone secreted by the parathyroid glands that plays a crucial role in calcium homeostasis.$1$. It acts on bones and stimulates the process of bone resorption (dissolution/demineralization),which releases calcium into the blood.$2$. It stimulates the reabsorption of $Ca^{2+}$ by the renal tubules in the kidneys,reducing calcium loss in urine.$3$. It also increases the absorption of $Ca^{2+}$ from digested food in the gastrointestinal tract (indirectly by stimulating the synthesis of active Vitamin $D_3$).Therefore,all the given options are correct.

How does the parathyroid hormone $(PTH)$ increase the $Ca^{2+}$ levels in the body?

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