Dermis

Definition

The dermis is the middle layer of the skin located beneath the epidermis. It contains connective tissue, blood vessels, nerve endings, sweat glands, and hair follicles.

5 Must Know Facts For Your Next Test

1. The dermis provides structural support and elasticity to the skin through collagen and elastin fibers.
2. It plays a crucial role in thermoregulation due to its dense network of blood vessels.
3. The dermis houses various immune cells that contribute to skin's defense against pathogens.
4. Sweat glands in the dermis help in excreting waste products and regulating body temperature.
5. Nerve endings in the dermis are responsible for sensory functions like touch, pain, and temperature.

Review Questions

• What types of structures are found within the dermis?
• How does the dermis contribute to thermoregulation?
• Which components of the dermis are involved in immune response?

Related terms

Epidermis:

The outermost layer of the skin that provides a barrier to infection.

Hypodermis: A subcutaneous layer beneath the dermis that stores fat and provides insulation.

Sebaceous Glands:

Glands found in the dermis that secrete sebum to lubricate and waterproof the skin.