Osteoclast activity is increased by ________.

A) parathyroid hormone
B) vitamin D
C) calcitonin
D) growth hormone
E) vitamin C

Osteoclast Activity

The resorption process of bone tissue by osteoclast cells, which is critical for bone remodeling and calcium homeostasis.

Parathyroid Hormone

A hormone produced by the parathyroid glands that regulates serum calcium concentration through its effects on bone, kidney, and intestine.

Increased

Describes a quantity or size that has become larger or greater over time.