ATI RN
Questions on the Integumentary System Questions
Question 1 of 5
A process in which whole of skin (epidermis and dermis) is preserved by means of some chemicals is known as -
Correct Answer: C
Rationale: Rationale: Taxidermy involves preserving the whole skin (epidermis and dermis) using chemicals to maintain the lifelike appearance of an animal. Albinism is a genetic condition causing lack of pigmentation. Toxicology is the study of the adverse effects of chemicals on living organisms. Tanning is a process of treating animal hides to produce leather, not preserving the whole skin.
Question 2 of 5
In mammals, the scent glands may be modified-
Correct Answer: D
Rationale: The correct answer is D because in mammals, scent glands can be modified sudorific (sweat) glands and sebaceous (oil) glands. Sudorific glands produce sweat that can carry scent, while sebaceous glands secrete oily substances that can also contribute to scent communication. Mucous glands, as mentioned in option C, are not typically involved in scent production in mammals. Option A and B individually are not comprehensive enough to cover all types of scent gland modifications found in mammals. Thus, the correct answer is D as it includes both sudorific and sebaceous glands, which are commonly modified for scent production in mammals.
Question 3 of 5
In which skin layer a chemical substance 'eleidin' is found-
Correct Answer: B
Rationale: The correct answer is B: Stratum lucidum. Eleidin is a protein-rich substance found in the stratum lucidum, the clear layer of the epidermis located between the stratum corneum and stratum granulosum. This layer is characterized by its translucent appearance due to the presence of eleidin, which helps to provide waterproofing and protection to the skin. The stratum germinativum (A) is responsible for cell proliferation, the stratum granulosum (C) is where keratinocytes undergo apoptosis, and the stratum corneum (D) consists of dead keratinocytes and serves as a barrier to external factors.
Question 4 of 5
While walking barefoot on the beach, Joe stepped on a thorn that penetrated through the sole of his foot to the dermis. How many layers of epidermis did the thorn penetrate?
Correct Answer: A
Rationale: The correct answer is A: 5. The thorn penetrated through the sole of Joe's foot to the dermis. The epidermis has 5 layers: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale. As the thorn reached the dermis, it had to pass through all 5 layers of the epidermis. Therefore, the correct answer is 5. Summary: B: 2 - Incorrect, not enough layers penetrated. C: 0 - Incorrect, the thorn penetrated the epidermis. D: 4 - Incorrect, the thorn penetrated all 5 layers of the epidermis.
Question 5 of 5
If a fair-skinned person is sunburned, why does his or her skin turn red?
Correct Answer: D
Rationale: The correct answer is D: The blood flow to the skin increases. When a fair-skinned person is sunburned, the body increases blood flow to the affected area to help with healing. This increased blood flow causes the skin to appear red due to the dilation of blood vessels near the skin surface. Choices A, B, and C are incorrect because a decrease in blood supply, an increase in red melanocytes, or an increase in production of red pigments do not directly explain why the skin turns red after sunburn.