Which layer of the skin contains sweat glands, sebaceous glands, and hair follicles?

Correct Answer: B

Rationale: The correct answer is B: Dermis. The dermis is the layer of the skin that contains sweat glands, sebaceous glands, and hair follicles. Sweat glands produce sweat, sebaceous glands produce oil, and hair follicles are responsible for hair growth. The epidermis (choice A) is the outermost layer and does not contain these structures. The hypodermis (choice C) is the deepest layer and mainly consists of fat cells, not sweat glands, sebaceous glands, or hair follicles. Therefore, the dermis is the correct choice.

Correct Answer: C

Rationale: The correct answer is C: It is hypertension with no specific cause. Essential hypertension is the most common type of high blood pressure, where there is no identifiable underlying cause. This distinguishes it from secondary hypertension which is caused by another disease (eliminating option A). Option B is incorrect as the term 'essential' in essential hypertension does not imply the necessity of treatment, but rather the absence of a known cause. Option D is also incorrect as essential hypertension does not necessarily refer to severe or life-threatening hypertension, but rather indicates a primary form with no specific cause.

Correct Answer: A

Rationale: The correct answer is A: Skin. The integumentary system consists of the skin, which includes the epidermis, dermis, and hypodermis. The epidermis is the outermost layer of the skin, providing protection and regulating temperature. Choice B (Skin and skin derivatives) is incorrect as the epidermis itself is considered part of the skin, not a derivative. Choice C (Skin and cutaneous gland) and choice D (Skin and hairs) are also incorrect as they are specific structures or components of the skin, not the entire integumentary system. The term "skin" encompasses all layers and structures that make up the integumentary system, making choice A the most appropriate answer.

Correct Answer: B

Rationale: The correct answer is B: Stratum granulosum. This layer of the epidermis contains granules of keratohyaline protein, which play a crucial role in the formation of keratin. Keratohyaline granules help bind keratin filaments together, leading to the development of a tough, protective barrier in the skin. A: Stratum malpighi is not the correct choice as it refers to the combination of the stratum basale and stratum spinosum layers of the epidermis, which do not contain keratohyaline granules. C: Stratum lucidum is not the correct choice as it is a thin, translucent layer found only in certain areas of the skin, such as the palms and soles, and does not contain keratohyaline granules. D: Stratum corneum is not the correct choice as it is the outermost layer of the epidermis composed of dead, ker

Correct Answer: A

Rationale: The correct answer is A because if dead cells of the stratum corneum are alive, it means the skin barrier is compromised, allowing bacteria to penetrate the skin and enter the body, leading to potential infections and health risks. Choice B is incorrect because the growth of hairs is unrelated to the status of the stratum corneum. Choice C is incorrect as the secretion of sweat is not directly affected by the condition of the stratum corneum. Choice D is incorrect because bacteria developing on the skin is a common occurrence, regardless of the state of the stratum corneum.