Integumentary System Flashcards
The function of the integumentary system is…
Protection, temperature regulation, sensory reception, and cutaneous absorption (oxygen, carbon dioxide, sunlight)
There three layers of the skin are…
Epidermis, dermis, and subcutaneous
Epidermis
The most superficial layer of skin composed of keratin and melanin
Keratin
A protein found in the stratum corneum payer that makes the epidermis tough and impenetrable
Melanin
A dark pigment in the skin and hair that is produced by melanocytes and protects from UV rays
Dermis
The layer below the epidermis, composed of connective tissues, blood vessels, glans, muscle tissue, nerve endings, and hair follicles
Subcutaneous
The deepest layer of the skin, composed mostly of connective tissues (mainly adipose or fat) and blood vessels
Hair consists of…
A shaft, root, and bulb
Nails
The hardened layer of stratum corneum made of hard keratin
Lunula
The half moon located at the base of the nail where nail growth occurs
The three main types of glands in the integumentary system are…
Sebaceous, sudoriferous, and ceruminous
Sebaceous glands
Located along the hair shaft, these glands secrete sebum and help keep the stratum corneum supple and waterproof
Sudoriferous glands
Sweat glands that help eliminate waste and help cool the body by removing heat through evaporation
The two main types of sudoriferous glands are…
Eccrine and apocrine glands
Eccrine
The most numerous type of sweat glands found primarily on the back, forehead, hands, and feet
