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SKIN
Plastic and reconstruction
16
Biology
Undergraduate 1
05/12/2010

Additional Biology Flashcards

 


 

Cards

Term
The integumentary consists of two main layers
Definition
The outerlayer is called epidermis and the inner is called the dermis
Term
The epidermis consists of??
Definition
epithelial cells and contains no blood vessels or nerves
Term
Stratum Basale
Definition
The reproductive layer that derives its nourishments; the pigments responsible 4 skin and hair color is produced here
Term
Stratum spinosum
Definition
Recieves the daughter cells produced by mitosis in the stratum basale. these cells have a spiny prickly appearance
Term
Stratum granulosum
Definition
Spiny cells move toward the outer surface of the body, flatten and grannular shape. process of keratinization occurrs here.
Term
Keratin
Definition
hard fibrous waterproof protein that is found in the hair,nails,and epidermis
Term
Stratum lucidum
Definition
thick skin; palms of the hands and soles of the feet
Term
Stratum corneum
Definition
approx. 2o layers of cells in various stages
Term
The dermis has two distinct divisions?
Definition

Reticular layer: thick deep layer tat provides collegen 4 strength and elastin 4 pliability of the skin

 

Papillary layer: papilla or projection which are the ground work of the fingers

Term
Subcutaneous layer
Definition
Or called hypodermis consists of adipose fat and loose connective tissue providing insulation 2 the organs
Term
Accessory structures of the integumentary system
Definition
hair, nails, and certain glands
Term
sebaceous glands r the oil producing gland
Definition
The oil tat is produced is called sebum
Term
sebum
Definition
helps w/fluid regulation and also keeps the skin and hair soft pliable
Term
sebaceous glands
Definition
are stimulated by sex hormones
Term
sudoriferous glands are sweat glands
Definition
Two main types: merocrine and apocrine
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