JBL EMT Practice Exam

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Which of the following skin layers contains sweat and oil glands, hair follicles, blood vessels, and nerve endings?

Dermis
Epidermis
Sebaceous
Subcutaneous

The correct answer is: Dermis

The correct answer is the dermis. The dermis is the middle layer of the skin and contains sweat and oil glands, hair follicles, blood vessels, and nerve endings. It is responsible for providing nutrients to the epidermis and regulating body temperature. This layer plays a crucial role in maintaining the skin's strength, elasticity, and resilience. Option B, the epidermis, is the outermost layer of the skin and primarily functions as a protective barrier against external elements. It does not contain sweat or oil glands, hair follicles, blood vessels, or nerve endings. Option C refers to sebaceous glands, which are specialized structures within the skin that produce sebum, an oily substance that helps keep the skin lubricated and waterproof. Option D, the subcutaneous layer, is the deepest layer of the skin primarily composed of fat and connective tissue. It helps regulate body temperature and provides cushioning and insulation but does not contain sweat or oil glands, hair follicles, blood vessels, or nerve endings.