GED Science TestLife ScienceMedium
A client is diagnosed with a severe vitamin D deficiency. Which of the following is an essential role of vitamin D in the human body?
- AImmune system regulation
- BBlood clotting
- CCalcium and phosphate absorption
- DRed blood cell formation
Show answer & explanationAnswer & explanation
Correct answer: C. Calcium and phosphate absorption
Vitamin D is crucial for the regulation of calcium and phosphate levels in the body. It promotes the absorption of these minerals from the gut, which is essential for bone health, nerve function, and muscle contraction.
Why the other options are wrong
- A. While vitamin D has some immune-modulating effects, its most essential and well-known role is calcium and phosphate absorption.
- B. Vitamin K is primarily involved in blood clotting.
- D. Folate and vitamin B12 are crucial for red blood cell formation.
Vitamin D Function
A fat-soluble vitamin that plays a vital role in bone health by regulating calcium and phosphate levels in the body.
- Synthesized in the skin upon sun exposure.
- Promotes calcium absorption from the gut.
- Deficiency can lead to rickets in children and osteomalacia in adults.
Memory trick: D for DENSE bones: Vitamin D helps absorb Calcium for strong bones.