Question

The release of parathyroid hormone causes which action?

A. It deactivates the formation of vitamin D
B. It causes excess calcium deposition in the bones
C. It stimulates the kidneys to excrete more phosphate in the urine
D. it decreases osteoclast formation

Answer 1

The release of parathyroid hormone stimulates osteoclasts to break down bone and release calcium into the blood, increases dietary calcium absorption, reduces calcium excretion by the kidneys, and increases phosphate excretion by the kidneys.C. It stimulates the kidneys to excrete more phosphate in the urine

Step-by-step explanation:

The release of parathyroid hormone (PTH) causes several actions that help to regulate calcium levels in the blood. One of the key actions is stimulating osteoclasts to break down bone matrix and release inorganic calcium-phosphate salts into the bloodstream. PTH also plays a role in increasing dietary calcium absorption by promoting the production of calcitriol (the active form of vitamin D), and it reduces the excretion of calcium by the kidneys. Additionally, PTH decreases serum phosphate by increasing its excretion by the kidneys.