PTH
A) stimulates osteoblasts to lay down new bone.
B) reduces blood calcium levels.
C) stimulates calcitonin release.
D) is produced by the thyroid gland.
E) is released when blood calcium levels fall.

Question

Quizplus · Accepted Answer

PTH (parathyroid hormone) is released by the parathyroid glands in response to low blood calcium levels. Its primary function is to increase blood calcium levels by stimulating the breakdown of bone and the release of calcium from the kidneys and intestines.