Which hormone is responsible for regulating calcium levels in the blood by promoting calcium absorption in the gut?

A Parathyroid hormone (PTH)
B Calcitonin
C Vitamin D ✓
D Oxytocin

Explanation

Vitamin D plays a crucial role in maintaining calcium homeostasis by promoting calcium absorption in the gut, which helps to regulate blood calcium levels.

Mnemonic

'D' for 'digestion' of calcium

Source

Berne and Levy Physiology
Hormones and Endocrine Markers Endocrinology Calcium Regulation Medium MEDICAL Confidence: high