Hesi Anatomy and Physiology

What is the integumentary system?

The integumentary system includes the skin, hair, nails, and glands that protect the body from environmental hazards, regulate body temperature, and provide sensory information.

What is the function of the dermis?

The dermis is the inner layer of skin that contains connective tissue, blood vessels, and nerve endings; it supports and nourishes the epidermis.

What does the epidermis do?

The epidermis is the outermost layer of skin that acts as a protective barrier from pathogens and chemicals, and facilitates barrier function.

What are the main components of hair?

Hair is composed of keratin, a protein that is critical for hair structure, along with various glands that produce oils to condition hair.

How does the skin regulate temperature?

The skin regulates temperature through sweat production and the dilation or constriction of blood vessels to maintain optimal body heat.