HESI A2 Anatomy and Physiology Practice Questions

Q 1 / 25 00:00

00:00 Elapsed

Question 1

How does the skin aid in maintaining the calcium and phosphate levels of the body?

Your Answer: Option(s)

Correct Answer: Option(s) D

Rationale

Vitamin D production

The skin plays a crucial role in maintaining calcium and phosphate levels in the body primarily through the production of vitamin D, which is synthesized when the skin is exposed to sunlight. This vitamin is essential for the absorption of calcium and phosphate in the intestines, thus directly influencing their levels in the bloodstream and overall bone health.

A) Sebum production
Sebum production refers to the secretion of oils from sebaceous glands in the skin, which helps to lubricate and protect the skin. While sebum has protective functions, it does not have a direct impact on the regulation of calcium and phosphate levels in the body.

B) Keratin synthesis
Keratin synthesis involves the production of keratin, a structural protein that helps form the outer layer of the skin, hair, and nails. Although keratin is vital for skin integrity and protection, it does not play a role in regulating calcium and phosphate levels in the body.

C) Vitamin A synthesis
Vitamin A synthesis occurs in the skin and is important for vision, immune function, and skin health. However, it does not contribute to the regulation of calcium and phosphate levels, which are primarily influenced by vitamin D.

Conclusion
The skin's contribution to maintaining calcium and phosphate levels is primarily through the production of vitamin D, which enhances the intestinal absorption of these minerals. Other processes such as sebum production, keratin synthesis, and vitamin A synthesis, while important for skin health and function, do not directly affect the regulation of calcium and phosphate levels in the body.

Select an answer to continue →

0% score

0/0 correct

Answered 0/25

Correct 0

Wrong 0

25 left

Unlock Full Access

All questions, explanations & stats

Subscribe Now

Vitamin D production

Diaphysis is being described when informed about a break in the middle region of the humerus.

Prolactin stimulates milk production in the breasts during lactation.

Hormones are chemical messengers that control growth, differentiation, and the metabolism of specific target cells.

Adults typically inhale about 500 mL of air in an average breath.

Free Preview Ended

Unlock Full Access

Vitamin D production

Diaphysis is being described when informed about a break in the middle region of the humerus.

Prolactin stimulates milk production in the breasts during lactation.

Hormones are chemical messengers that control growth, differentiation, and the metabolism of specific target cells.

Adults typically inhale about 500 mL of air in an average breath.

Free Preview Ended

Unlock Full Access

You are leaving this quiz

You're in the middle of a quiz

Report an Issue

Rate this Practice Test