Which of the following hormones 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, specifically its active form calcitriol, plays a crucial role in regulating calcium levels in the blood by promoting calcium absorption in the gut.

Mnemonic

Vitamin D = Very Important for Calcium Transport In Nutrients

Source

Berne and Levy Physiology
Hormones and Endocrine Markers Endocrinology Bone and Mineral Metabolism Easy MEDICAL Confidence: high