The Integumentary System

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Functions of the Integumentary System

Acts as a barrier to protect the body from the external environment

Vitamin D synthesis

Regulates body temperature

(connects to excretory) eliminates waste products

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Structures of the Integumentary System

Epidermis- the outer layer of the skin, consisting of both living and dead cells

Dermis- the layer below the epidermis, containing many unique structures, such as hair follicles, sweat glands, and sensory neurons

Melanocytes- cells at the bottom of the epidermis (responsible for producing the pigment melanin

Basal Cells- the bottom group of cells of the epidermis

Sebaceous Glands- attached to the hair follicles, produces an oily substance (sebum) to lubricate and protect the hair and skin

Hair Follicles- groups of tissue that grow hair (warmth)

Sweat Glands- a small, tubular structure in the skin that produces sweat (cools body through evaporation on the surface of the skin and eliminates products of cellular waste