ATI RN
Integumentary System Questions Questions
Question 1 of 5
Scar tissue is the result of
Correct Answer: B
Rationale: The correct answer is B because scar tissue is primarily composed of collagen fibers, which are produced by fibroblasts during the wound healing process. Collagen fibers provide structural support and help in tissue repair. Scar tissue also has relatively few blood vessels compared to normal tissue. A: Increased numbers of fibroblasts alone do not directly result in scar tissue formation. C: The stratum germinativum is part of the epidermis and not directly involved in the formation of scar tissue. D: Scar tissue does not involve an increase in epidermal layers; it is mainly about the dermal layer with collagen deposition.
Question 2 of 5
The layer of the skin that contains bundles of collagen and elastic bers responsible for the strength of the skin is the ________ layer.
Correct Answer: B
Rationale: The correct answer is B: reticular. The reticular layer of the skin is located beneath the papillary layer and is composed of collagen and elastic fibers. These fibers provide strength and elasticity to the skin, helping to maintain its structure and integrity. The papillary layer is primarily responsible for nourishing the epidermis, while the epidermal layer is the outermost layer of the skin responsible for protection. The subcutaneous layer, also known as the hypodermis, is composed of fat and connective tissue, providing insulation and cushioning rather than strength. Therefore, the reticular layer is the most appropriate choice for the layer of the skin containing collagen and elastic fibers crucial for skin strength.
Question 3 of 5
What is the survival rate of a localized malignant melanoma that is detected and removed in the early stages of the cancer?
Correct Answer: A
Rationale: The correct answer is A: Above 95%. In localized malignant melanoma, early detection and removal significantly increase the survival rate. With timely intervention, the survival rate can exceed 95% due to the cancer being confined to the primary site and not having spread to other parts of the body. This is supported by medical research and statistical data on cancer outcomes. Choices B, C, and D are incorrect because they do not accurately reflect the high survival rate associated with early detection and treatment of localized malignant melanoma. Choice B (75%) is too low, while choices C (60%) and D (40%) are even further from the actual survival rates for early-stage melanoma.
Question 4 of 5
All of the following can be used in the management of severe burn except
Correct Answer: A
Rationale: The correct answer is A: cell culture. In the management of severe burns, cell culture is not typically used. Fluid replacement is crucial for maintaining circulation and preventing shock. Corticosteroids may help reduce inflammation. Antibiotics are used to prevent or treat infections. Cell culture is not directly involved in the immediate management of severe burns and is more relevant in research or specialized cases.
Question 5 of 5
All of the following are true of perspiration produced by merocrine sweat glands except that it
Correct Answer: A
Rationale: The correct answer is A because perspiration produced by merocrine sweat glands does not directly produce body odor. Body odor is primarily caused by the interaction between sweat and bacteria on the skin. Merocrine sweat glands produce watery sweat that contains electrolytes and waste products. This watery sweat helps regulate body temperature and prevents bacteria from colonizing the skin due to its slightly acidic nature. Therefore, choice A is incorrect as merocrine sweat glands do not directly produce body odor.