Question 15

The skin aids in maintaining calcium and phosphate levels through the production of Vitamin D.

The skin synthesizes Vitamin D when exposed to sunlight, which plays a critical role in regulating calcium and phosphate levels in the body.

A) Sebum

Sebum is an oily substance produced by sebaceous glands in the skin that helps to lubricate and protect the skin and hair. However, it does not have any direct role in the regulation of calcium and phosphate levels in the body.

B) Keratin

Keratin is a structural protein found in the skin, hair, and nails, providing strength and resilience. While it is essential for skin health, it does not participate in the regulation of calcium and phosphate levels.

C) Vitamin A

Vitamin A is vital for vision, immune function, and skin health, but it does not directly influence calcium and phosphate metabolism. Therefore, it is not involved in maintaining the levels of these minerals in the body.

D) Vitamin D

Vitamin D is synthesized in the skin upon exposure to ultraviolet (UV) light and is essential for the absorption of calcium and phosphate in the intestines. It directly influences bone health and mineral balance in the body, making it crucial for maintaining appropriate levels of these minerals.

Conclusion

Vitamin D is the only option that directly impacts calcium and phosphate regulation through its synthesis in the skin and subsequent role in mineral absorption. The other options do not contribute to this process, highlighting the unique and essential function of Vitamin D in maintaining mineral balance in the body.