Ch4 Integumentary System Flashcards
integumentary system
includes the skin and its accessory structures
epidermis
outer layer of skin; waterproof layer that functions as protection and contains melanocytes that secrete melanin
dermis
deep layer of skin that contains the sweat and oil glands; also contains tiny muscles attached to the hair follicles
subcutaneous layer
layer of loose connective tissue that connects the skin to the surface muscles; contains the blood vessels and fat; also called the hypodermis
adipocytes
fat cells that make up most of the subcutaneous layer
arrector pili muscles
tiny muscles that attach to the hair follicle
hair
keratinized fibers that arise from hair follicles
hair follicle
area from which hair grows; located in the dermis
keratin
protein found in hair and nails that promotes hardness
keratinocytes
cells found in the epidermal layer of the skin that secrete keratin and assist in waterproofing the body
melanocytes
cells that give color to the skin, eyes, and hair by secreting the pigment melanin; located in the dermis
nail
translucent plate made of keratin that covers and protects the ends of fingers and toes
sebaceous glands
glands that secrete oil (sebum) into the hair follicles and onto the dermis
sebum
oily secretion of the sebaceous gland
sudoriferous glands
glands that secrete sweat and assist in body temperature regulation
adip/o
fat
cry/o
cold
cyan/o
blue
derm/o, dermat/o, cutane/o
skin
electr/o
electric, electricity
erythr/o
red
hidr/o
sweat
kerat/o
hard
lip/o
fat