Parathormone deficiency produces muscle cramp | vedclass

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Question

(A) Parathormone $(PTH)$ is a peptide hormone secreted by the parathyroid glands that plays a crucial role in calcium homeostasis.$PTH$ increases bloo

Vedclass · Accepted Answer

Lowered blood $Ca^{2+}$

Vedclass · Answer

(A) Parathormone $(PTH)$ is a peptide hormone secreted by the parathyroid glands that plays a crucial role in calcium homeostasis.$PTH$ increases blood calcium levels by stimulating bone resorption (releasing $Ca^{2+}$ from bones into the blood),increasing calcium reabsorption by the renal tubules,and promoting calcium absorption from digested food in the intestine.$A$ deficiency of $PTH$ (hypoparathyroidism) leads to a significant decrease in blood calcium levels (hypocalcemia).Calcium ions are essential for the normal functioning of muscles and nerves.Low levels of $Ca^{2+}$ in the extracellular fluid increase the excitability of nerve and muscle fibers,leading to involuntary muscle contractions,spasms,or tetany.

Parathormone deficiency produces muscle cramps or tetany as a result of:

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