Integumentary System and Skin Structures

The main function of the integumentary system is to serve as a barrier against infection and injury, regulate body temperature, remove wastes, gather sensory information, and produce vitamin D.

The epidermis has an outer layer and an inner layer.

Melanin protects the skin by absorbing ultraviolet radiation from the sun.

<p>The blood vessels in the dermis help regulate body temperature by narrowing to conserve heat when it is cold and widening to help the body lose heat on warm days.</p> Signup and view all the answers

<p>The basic component of human hair and nails is a protein called keratin.</p> Signup and view all the answers