cells
the hormone that stimulates cells to reproduce and heal?
what is epidermal growth factor (EGF)
It is the outermost layer of the skin.
What is the epidermis?
Keratin is produced in this layer
the stratum granulosum
It contains no nerves.
What is the nail plate?
the binding of a protein molecule to a glucose molecule
What is glycation?
How is B-keratin different from A-keratin?
It has lower moisture and fat than A-keratin. it is harder
Cells divide in this layer
What is the stratum germinativium?
What causes telangiectasia?
Telangiectasia is the dilation of the capillary walls.
What percentage of hard B-keratin does hair contain?
what is 90%
What function do the sudoriferous glands perform?
excrete perspiration, regulate body temperature, and detoxify the body
What causes injured skin to restore itself to its normal thickness?
hyperproduction of cells
Feedback:
Through a hyperproduction of cells and blood clotting, injured skin can restore itself to its normal thickness.
support layer below the epidermis
What is the dermis?
____ are the basic material and building blocks of the body’s tissues.
Proteins
scar tissue lacks these two things?
what is hair and sweat glands
causes transepidermal water loss?
evaporation
When do free radicals produce more free radicals?
while causing oxidation reactions
tubelike openings in the epidermis
What are follicles?
What are sweat glands that are found all over the body with openings on the skin’s surface through pores and that are not attached to hair follicles?
eccrine
Where in the body are the coiled structures known as apocrine glands found?
underarm and genital areas
Which nerves convey impulses from the brain or spinal cord to the muscles or glands?
motor
What causes the body to produce its own vitamin D?
exposure to the sun
What are membranes of ridges and grooves that attach to the epidermis?
dermal papillae
What part of the skin provides a protective cushion and energy storage for the body?
subcutaneous layer
What is the technical term for the nail?
onyx
What is the result of the contraction of the arrector pili muscle?
goose bumps