Highly odorous and characteristic smell of rabbits is by a milky secretion of-

Correct Answer: B

Rationale: The correct answer is B: Perineal glands. Rabbits produce a highly odorous and characteristic smell through their perineal glands. These glands are located near the anus and secrete a substance that helps rabbits communicate through scent marking. A: Tarsal glands are located on the legs of deer and are not related to rabbits' distinctive smell. C: Zeis glands are associated with eyelashes and are not responsible for the odor produced by rabbits. D: "None of these" is incorrect as perineal glands are indeed responsible for the odor in rabbits. In summary, the perineal glands in rabbits secrete a substance that gives them their unique smell, making choice B the correct answer.

Correct Answer: B

Rationale: The correct answer is B: Latent. Evaporation of a fluid through the skin is considered latent water loss because it occurs without any noticeable signs or symptoms. This type of water loss is not easily perceptible and may not be readily apparent to an individual. Sensible water loss (choice A) refers to water loss that is easily measurable, such as through sweating. Intensible (choice C) and discrete (choice D) are not terms used to describe water loss through evaporation of fluids. Therefore, the correct term for water loss due to evaporation through the skin is latent.

Correct Answer: A

Rationale: The correct answer is A: full thickness. When the epidermis, dermis, and part of the hypodermis are burned, it involves damage to all layers of the skin, including the deepest layer. This results in complete destruction of the skin layers, making it a full-thickness burn. The other choices are incorrect because: B: Second degree burns involve damage to the epidermis and part of the dermis, not the hypodermis. C: Partial thickness burns affect only parts of the epidermis and dermis, not the hypodermis. D: First degree burns are superficial, involving only the epidermis and not the dermis or hypodermis.

Correct Answer: A

Rationale: Step-by-step rationale: 1. Dandruff is caused by excessive shedding of dead skin cells on the scalp. 2. Inflammation around sebaceous glands can lead to increased production of sebum, which can contribute to dandruff. 3. Sebaceous glands produce oil that can mix with dead skin cells and lead to flaking. 4. Inactive apocrine sweat glands, inactive merocrine sweat glands, and overactive arrector pili muscles are not directly related to the production of skin flakes on the scalp. Summary: - Choice A is correct as inflammation around sebaceous glands can lead to increased sebum production, contributing to dandruff. - Choices B, C, and D are incorrect as they are not directly associated with the production of dry skin flakes on the scalp.

Correct Answer: A

Rationale: The correct answer is A because merocrine sweat glands secrete a watery fluid directly onto the surface of the skin through exocytosis. This process helps regulate body temperature by evaporative cooling. Choice B is incorrect as merocrine sweat glands are simple coiled tubular glands, not compound alveolar glands. Choice C is incorrect as the number and activity of merocrine sweat glands decrease with aging. Choice D is incorrect as body odor is primarily produced by apocrine sweat glands, not merocrine sweat glands.