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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Warm the enema solution to prevent discomfort and potential injury from a cold solution.
B. Clean technique is used when administering enemas, not sterile technique.
C. The left lateral position is preferred for enema administration.
D. An oil-based lubricant is not recommended for enema tubing; a water-based lubricant is preferred.
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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