Question

Increase in the excitability of nerves and muscles leading to sustained contraction of the muscles of larynx, face , hand and feet is due to:
A)hyperactivity of thyroid
B) hyperactivity of parathyroid
C) hypoactivity of thyroid
D) hypoactivity of parathyroid

Answer 1

hyper activity of parathyroid is the correct answer

Answer 2

Answer:

D) hypoactivity of parathyroid

Explanation:

The sustained contraction of muscle means the muscle is always contracted even without the electrical impulse generation and becomes an involuntary action.

This condition happens when an ion called calcium or Ca⁺² is present in very low volume. The decrease in the amount of calcium is due to the reduced production of the parathyroid hormone which maintains the level of calcium in the blood.  This reduced activity is known as the "hypoparathyroidism or hypoactivity of the parathyroid".

To learn more:

1. Parathyroid gland: https://brainly.in/question/6572091

2. Function of Parathyroid : https://brainly.in/question/8190618