Which hormone is responsible for the regulation of calcium levels in the blood by stimulating osteoclasts to break down bone tissue?

A Parathyroid hormone (PTH) ✓
B Calcitonin
C Thyroid-stimulating hormone (TSH)
D Growth hormone (GH)

Explanation

Parathyroid hormone (PTH) regulates calcium levels in the blood by stimulating osteoclasts to break down bone tissue, releasing calcium into the bloodstream.

Mnemonic

'PTH' sounds like 'path' to increased calcium levels

Source

Berne and Levy Physiology
Hormones and Endocrine Markers Endocrinology Parathyroid Gland Hormones Medium MEDICAL Confidence: high