Before the discovery of these glands, thyroid surgery often led to a rapid drop in blood calcium levels, which triggered muscle contractions and cardiac arrhythmias. What glands are these and which hormone is lacking?
A) parathyroid glands; calcitonin
B) parathyroid glands; parathyroid hormone
C) parathyroid glands; levothyroxine
D) thyroid glands; levothyroxine
E) thyroid glands; calcitonin

Question

Quizplus · Accepted Answer

The parathyroid glands produce parathyroid hormone, which regulates calcium levels in the blood. Without them, calcium levels drop, causing muscle contractions and cardiac issues.

Before the Discovery of These Glands, Thyroid Surgery Often Led