What prevents backflow or blood during circulation?

the chemical conversion of living cells into dead protein cells in known as

body system responsible for circulation of the blood including heart, arteries, veins, and capillaries

first layer of the skin

an opening that contains the root of the hair

Motor nerves carry messages from the brain to the muscles and are called

the removal of dead skin to stimulate new cell growth is known as

structure that could possible swell and possible indicate infection

active stage of growth

located on the palms and soles to give friction. on the fingertips

thread-like fibers that extend from the nerve cell and bring information to the cell body are called

the primary motor nerve of the face is:

last stage of hair growth

layer of skin called the Horny layer

what touch receptors are responsible for sensations of pressure, vibrations, movement and texture

hair growth, skin condition and energy levels are all controlled by:

unpigmented hair is called:

transitional stage of hair growth

what is the term that describes the absorption process that allows some molecules to pass through the skin

what is the muscular organ that seperate the chest cavity from the abdomen when breathing

the study of skin

what is the outer most layer?