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 C
Explanation
A. Postoperative respiratory function may improve with proper teaching.
B. Postoperative pain should be managed, not increased.
C. Preoperative teaching helps reduce anxiety by preparing the client for the procedure.
D. Preoperative teaching can reduce the length of postoperative care.
Correct Answer is A
Explanation
A. Vitamin A deficiency can cause vision impairments, such as night blindness, due to its essential role in maintaining the health of the retina.
B. A swollen tongue is more commonly associated with vitamin B deficiencies, particularly riboflavin (B2) or niacin (B3).
C. Constipation is not a typical symptom of vitamin A deficiency and is more commonly linked to inadequate dietary fiber or dehydration.
D. Bleeding gums are associated with vitamin C deficiency, which impacts collagen synthesis and gum health, rather than vitamin A deficiency.
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