ATI RN
Integumentary System Multiple Choice Questions and Answers Questions
Question 1 of 5
What is the function of melanin?
Correct Answer: A
Rationale: The correct answer is A: To protect the skin from UV radiation. Melanin is a pigment produced by melanocytes in the skin that acts as a natural defense mechanism against UV radiation. It absorbs and scatters UV light, preventing damage to the skin cells and reducing the risk of skin cancer. Choices B and C are incorrect because while melanin does contribute to skin color, its primary function is UV protection. It also does not directly regulate body temperature. Choice D is incorrect as melanin does not regulate body temperature.
Question 2 of 5
A client has been diagnosed with a deep vein thrombosis and is to be discharged on warfarin (Coumadin). The client is adamant about refusing the drug because 'it's dangerous.' What action by the nurse is best?
Correct Answer: A
Rationale: The correct answer is A: Assess the reason behind the client's fear. This is the best action because it allows the nurse to understand the client's specific concerns and address them effectively. By exploring the client's fears, the nurse can provide personalized education and support, potentially alleviating the client's anxieties and increasing compliance. Choice B is incorrect because simply reminding the client about laboratory monitoring does not address the underlying fear. Choice C is incorrect as general statements about drug safety may not address the client's specific concerns. Choice D is also incorrect as it focuses on consequences rather than addressing the root cause of the client's refusal.
Question 3 of 5
Pigmentation of the skin is by the secretions of-
Correct Answer: C
Rationale: The correct answer is C: Melanocytes. Melanocytes are the cells responsible for producing melanin, the pigment that gives color to the skin. Monocytes, neutrophils, and eosinophils are types of white blood cells involved in immune responses and inflammation, not in pigmentation of the skin. Melanocytes specifically produce melanin, which determines the color of an individual's skin, hair, and eyes. Therefore, the secretion of melanocytes is responsible for skin pigmentation.
Question 4 of 5
In rabbit the melanin is contained in highly specialized stellate cells called-
Correct Answer: B
Rationale: The correct answer is B: Melanocytes. Melanocytes are the cells responsible for producing melanin, the pigment that gives color to skin, hair, and eyes. In rabbits, melanin is contained in these specialized cells, not in chromatophores (A), which are found in fish and amphibians. Melanin granules (C) are the actual pigment produced by melanocytes, not the cells themselves. Carotene granules (D) are unrelated to melanin production and are responsible for the orange color in some animals. Therefore, the correct answer is B as melanocytes are specifically responsible for producing melanin in rabbits.
Question 5 of 5
The thickest portion of skin in man is found at the region of
Correct Answer: D
Rationale: The correct answer is D: Sole. The thickest portion of skin in humans is found on the soles of the feet due to the constant pressure and friction they endure from walking and standing. This leads to a thicker layer of protective skin to provide support and cushioning. The head (A), thumb (B), and palm (C) do not experience the same level of pressure and friction as the soles, resulting in thinner skin layers in those areas. Thus, the sole is the correct choice for the thickest portion of skin in humans.