integumentary system Flashcards
Skin functions Chemical level
metabolic functions, excretion
skin function physical level
protection
skin function biological level
body temperature
Epidermis layers
-stratum corneum - dead cells
-stratum lucidum*** - only in thick skin like palms and soles of feet
-stratum granulosum -lemmellar granules and kerotohylane
-stratum spinosum, kertinocytes
-stratum basle, one layer of cells
cells in the integumentary system by layer (epidermis)
keratinocyte
melanocyte
dendritic cells
tactical cells
cells in the integumentary system by layer (dermis)
Fibroblasts
Macrophages
Mast cells & WBC
Glands in the skin
-eccrine sweat glands - most numerous
-apocrine sweat glands - Axillary & anogenital area “starts at puberty”
-sebaceous oil gland - widely distributed, in hair follicle, secretes sebum
Burns degrees
1st, red and painful epidermis
2nd, red, painful, blisters epidermis and dermis
3rd, all layers and needs medical treatment
how to tell if the burn is critical in adults
25% of the body is 2nd degree
10% of the body is 3rd degree
hands, feet, and face experiences 3rd
burn percentages
anterior and posterior head = 9%
anterior and posterior arms = 18%
anterior and posterior trunk = 36%
anterior and posterior legs = 36%
private parts = 1%
Cancer Types
Basel cell carcinoma - most common
squamous cell carcinoma - 2nd most common
Melanoma - most dangerous
appendages of the skin
-hair + hair follicle
-nails
-sweat glands
-sebaceous glands
hair + hair follicle
-dead keratinized cells
-pigments (yellow, rust, brown, black)
-grey + white: decreased melanin production, increase in air bubbles
aging
– decreased sebaceous
gland activity leads
to….
– subcutaneous fat and
elasticity decrease
leads to…
– decreased numbers of
melanocytes and
dendritic cells leads
to…
– Hair thinning
