A nurse is assisting with teaching a class about the function of cells in the epidermis. The nurse should include that which of the following cells determine skin color?
Keratinocytes
Melanocytes
Merkel cells
Langerhans cells
The Correct Answer is B
A. Keratinocytes are the most abundant cells in the epidermis, responsible for producing keratin, which strengthens skin but does not determine skin color.
B. Melanocytes produce melanin, the pigment responsible for skin color. They play a key role in protecting the skin from ultraviolet radiation.
C. Merkel cells are mechanoreceptors involved in touch sensation and do not influence pigmentation.
D. Langerhans cells are part of the immune system, aiding in the detection and presentation of pathogens, with no role in pigmentation.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Apply lotion between the toes: Lotion should be avoided between the toes to prevent moisture buildup, which can lead to fungal infections.
B. Wash feet in hot water: Hot water can burn the feet, and clients with diabetic neuropathy may have impaired sensation.
C. Avoid walking barefoot: Diabetic neuropathy can impair sensation, leading to unrecognized injuries from cuts or abrasions, making it important to wear shoes.
D. Wear open-toed shoes: Open-toed shoes expose the feet to injury, and closed-toed shoes are recommended for protection.
Correct Answer is D
Explanation
A. Vitamin D is essential for bone health, but it does not reduce birth defects.
B. Omega-3 fatty acids support fetal brain development.
C. Lutein supports eye health but is not related to birth defects.
D. Folic acid reduces the risk of neural tube defects and is recommended for women during pregnancy.
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