💀anatomy and physiology i review

Vitamin D

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Vitamin D is a fat-soluble vitamin that plays a crucial role in calcium absorption and bone health, as well as in immune function. It is synthesized in the skin upon exposure to sunlight and can also be obtained from dietary sources.