Increase in the excitability of nerves and mu | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The excitability of nerves and muscles is regulated by the concentration of ions,particularly $Ca^{2+}$.Parathyroid hormone $(PTH)$ is a hypercalc

Vedclass · Accepted Answer

Hypoactivity of parathyroid

Vedclass · Answer

(D) The excitability of nerves and muscles is regulated by the concentration of ions,particularly $Ca^{2+}$.Parathyroid hormone $(PTH)$ is a hypercalcemic hormone,meaning it increases blood $Ca^{2+}$ levels by stimulating bone resorption (osteoclast activity).$A$ decrease in $PTH$ activity (hypoactivity) leads to hypocalcemia,which is a low level of $Ca^{2+}$ in the blood.Low levels of $Ca^{2+}$ lower the threshold for nerve impulse generation,thereby increasing the excitability of nerves and muscles.This increased excitability results in sustained contractions or spasms of the muscles of the larynx,face,hands,and feet,a condition known as tetany.

Increase in the excitability of nerves and muscles leading to sustained contraction of the muscles of larynx,face,hand and feet is due to

Similar Questions

Which of the following pairs of hormone and its associated disease is correct?

What does parathormone $(PTH)$ stimulate?

Ram has a high level of calcium in his blood. An excess of which hormone can cause this effect?

The pituitary gland,by virtue of its tropic hormones,controls the secretory activity of other endocrine glands. Which one of the following endocrine glands can function independently of the pituitary gland?

Parathormone is secreted during:

Vedclass Test Series

Exam Paper Generator

Online Exam Module