Which skin layer contains sweat glands and hair follicles?

The dermis is the skin layer that contains sweat glands and hair follicles, making it essential for various functions related to skin health and thermoregulation. This layer is located beneath the epidermis and is much thicker, providing structural support and nourishment to the skin.

Within the dermis, you find a rich network of blood vessels, connective tissues, and fibers that give skin its strength and elasticity. Sweat glands located in the dermis play a crucial role in regulating body temperature through the process of sweating. Hair follicles, also found in this layer, are responsible for hair growth and contribute to the sensory function of the skin, as they are associated with nerve endings.

The epidermis, while important for protection and barrier functions, does not contain these structures. The subcutaneous layer, or hypodermis, lies beneath the dermis and is primarily composed of fat and connective tissue, serving as insulation and cushioning for the body. Hence, the dermis is the correct answer as it directly houses the sweat glands and hair follicles that perform vital functions in skin health and maintenance.