Q. Tetany is caused by

 1438  208 WBJEEWBJEE 2011Chemical Coordination and Integration Report Error

Solution:

Tetany is a spasm and twitching of the muscles, particularly those of the face, hands, and feet. Tetany is usually caused by a reduction in the blood calcium level, which may be due to underactive parathyroid glands (hypoparathyroidism).