Medical Terminology Ch 3
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- Does not have a blood supply or any connective tissue.
- It is dependent for nourishment on the deeper layers of skin.
- deepest layer within the epidermis.
- Cells in this layer continously grow and multiply
- New cells forming push old cells toward the outer layer of epidermis
- cells shrink, die, and become filled with a hard protein
- These dead, overlapping keratinized cells allow the skin to act as a barrier to infection and also make it waterproof.
produce black pigment
- strong fibrous protein present in present in connective tissues
- form a "flexible glue" that gives connective tissue its strength
- layer of tissue composed of fat cells
- protects the deeper tissues of the body and acts as an insulation for heat and cold.
third deepest layer also called hypodermis
The deeper cells in hair root force older keratinized cells to move upward forming hair shaft.
The nail body is connected to the tissue underneath by the nail bed
Nails grow longer from the nail root, found at the base of the nail
Is covered and protected by the cuticle
soft tissue that covers and protects the base of the nail
is the exposed edge that is trimmed when nails become to long
light colored half moon area at the base of the nail
- found in the dermis, secrete oil (sebum), which lubricates the hair and skin. Helps to prevent drying and cracking.
- Secrete sebyk directly into the hair follicles rather than the duct.
- Secretion of sebum increases during adolescence
- Loss of sebum at old age, along with sun exposure can account with wrinkles and dry skin.
- sweat glands in the pubic and underarm areas that secrete thicker sweat
- produces odor when it comes in contact with bacteria on skin
- What we recognize as body odor
- contains a small amount of waste product but is normally colorless and odorless
- Sweat glands function to cool the body as sweat evaporates
- sweat glands
- highly coiled glands are located in the dermis.
Sweat travels to the surface of the skin in a sweat duct
surface opening of a sweat duct.
abnormal condition of no sweat
removal of nail
A diffuse, acute infection and inflammation of the connective tissue found in the skin
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