PA1 LAB Flashcards
Physical barriers that protects underlying tissues and organs from microorganism, physical trauma, ultraviolet radiation and dehydration.
skin
Outermost layer of the skin ; It consists of dead, keratinized cells that render the skin waterproof.
epidermis
Inner layer of the skin ; Dermal papillae connect the dermis to the
epidermis ; Consider the origin of sebaceous glands, sweat glands and hair follicles.
dermis
Secrete an oily substance called sebum that
waterproofs the hair and skin.
sebaceous glands
primary function is
secretion of sweat and thermoregulation,
which is accomplished by evaporation of sweat from the skin surface
eccrine gland
associated with hair
follicles in the axillae, perinium, and
areolae of the breast. ; functions furing puberty
apocrine gland
Contains fat cells, blood vessels, nerves and
the remaining portions of sweat glands and
hair follicles. ; stores fat for energy ; provides insulation ; serves as cushion
subcutaneous tissue
Consists of layers of keratinized cells,
found over much of the body
hair
short, pale, fine and
present over much of the body.
vellus hair
longer, generally darker and coarser
than vellus hair.
terminal hair
located in the distal phalanges of fingers
and toes ; Hard, transparent plates of keratinized
epidermal cells that grow from the cuticle.
nails
always burns but never tans ; pale skin, red hair, freckles
type I
usually burns but sometimes tans ; pale skin
type II
may burn usually tans ; darker
type III
rarely burns, always tans ; mediterranean
type IV
moderate constitutional pigmentation ; latin american, middle eastern
type V
marked constitutional pigmentation ; black
type VI
Blue-tinged, especially in the
perioral, nail bed, and
conjunctival areas. ; poor circulation of oxygenated blood ; lots of carbon dioxide running in the system
cyanosis
Arterial insufficiency,
decrease blood supply and
anemia.
pallor
Results from
Cardiopulmonary problem
central cyanosis
Yellow skin tone
Particularly in the sclera,
Oral mucosa, palms and
Toes ; problems in liver
jaundice
Darkening of the skin in
the Body folds like neck,
axillae and groin ; problems in weight
acanthosis nigricans