Integumentary Flashcards
epidermis
keratin ( waterproof ,skin flakes off, antimicrobial , proteins)
corneum
unbroken =prevents entry of pathogens and most chemicals; keratin
germinativium
mitosis produce cells, vitamin D - immune system and calcium
langerhans
phagocyte foreign material & stimulate lymphocyte
merkel
receptors (touch)
melanocytes
melanin on exposure to UV rays
melanin
protection from UV rays
Dermis
fibrous connective tissue
Fibroblasts
collagen (strong) elastin (stretchy)
impetigo
bacteria infection (staph) CONTAGIOUS
ECZEMA
allergic reaction; genetic(rash)
Warts
skin cells divide abnormal -→growth-→raised
Necrotizing fasciitis
acute infection = serious destroys tissue under the skin
Burns
- superficial ;pain not blistered
- partial thickness ;deeper layers of skin affected
- full thickness ;entire epidermis shared/burned- MEDICAL ATTENTION
- deep full thickness; underlying muscle tissue /bone
Sebaceous glands
open in2 hair follicles ;skin surface
ceruminous glands
ear wax / prevents drying
apocrine
scent gland, axial and genital area ;STRESSFUL & EMOTION
Sweat gland
water& sodium chloride=SALTY
vasoconstriction
decrease flow of blood to skin & heat in core ;STRESSFUL situations “FIGHT OR FLIGHT ”
vasodilation
increase blood flow through dermis ; heats body (FLUSH Face)
ARTERIOLES
- stress=constrict blood to more vital signs
- Cold=constrict to conserve body heat
- dilate=warmth increase heat loss
RECEPTORS
TOUCH
Adipose
- cytokinesis active WBC
- cushions body prominences
- stored energy
- appetite
- insulin
- brown & beige fat produce heat
