Parathyroid hormone works by several mechanisms to maintain an adequate level of calcium in the blood. Which of the following is a mechanism of parathyroid hormone action? A) stimulates release of calcitriol B) increases deposition of hydroxyapatite in the bone C) mobilizes Ca²⁺ from sarcoplasmic reticulum D) increases loss of calcium in urine

Question

Quizplus · Accepted Answer

Parathyroid hormone stimulates the release of calcitriol (active form of vitamin D) from the kidneys, which in turn increases calcium absorption from the gut, helping to raise blood calcium levels.

Parathyroid Hormone Works by Several Mechanisms to Maintain an Adequate