Which gland is primarily responsible for regulating calcium levels?

Prepare for the Neurosonology Exam with our comprehensive quiz. Engage with interactive flashcards, multiple-choice questions, and detailed explanations. Enhance your readiness and confidence for the test!

Calcium homeostasis is governed mainly by the parathyroid glands through parathyroid hormone. When blood calcium drops, PTH is released and raises calcium by three actions: it stimulates bone resorption to release calcium into the bloodstream, increases calcium reabsorption in the kidneys, and promotes the activation of vitamin D, which enhances intestinal calcium absorption. The thyroid gland produces calcitonin, which can lower calcium levels, but this is a secondary, modulatory effect and not the primary regulator. The pituitary and adrenal glands do not directly control calcium levels.