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Integumentary System
A&P II Chapter 5
Term | Definition |
---|---|
layers of the skin | epidermis, dermis (corium), subcutaneous |
keratin | protein that makes the skin waterproof |
dermis consists of | sweat glands & sebaceous (oil) glands |
dermis contains | capillaries, lymphatic channels, nerve endings |
subcutaneous contains | connective tissues and adipose (fatty) tissues |
accessory structures of skin | hair, nails, glands |
strand of hair consists of | root, follicle, shaft |
lanugo | soft fine hair of developing fetus |
hair follicle | where hair develops |
dermatology | study of skin |
diaphoresis | secretion of sweat |
abrasion | rubbing away of skin or mucous membrane due to friction - i.e. carpet burn |
cyst | closed sac that contains fluid, semi-fluid or solid material |
fissure | crack like sore or groove in skin or mucous membrane |
laceration | tear in the skin |
onychomycosis | fungal infection of the nail |
onychocryptosis | ingrown nail |
pachyderm | abnormal thickening of the skin |
verruca vulgaris | benign skin lesion know as a wart |
scabies | highly contagious disease caused by human itch mite (parasite) |
dermis layer aka | corium |
cryosurgery | uses subfreezing temperature to freeze and destroy tissue - liquid nitrogen |
debridement | removal of damaged or necrotic tissue from wound to promote healing |
dermatoplasty | skin transplantation |
dermabrasion | removal of the epidermus |
Tinea | ringworm |
tinea cruris | ringworm of the groin - jock itch |
tinea pedis | athlete's foot |
abscess | collection of pus in any body part |
vesicle | blister |
bulla | large blister |
pustule | small elevation filled with pus - small abscess |
comedo | open = black head, closed = white head |
scales | thin flakes of hardened epithelium |
hives | wheals |
impetigo | contagious infection - pustules filled with staph or strep |
papule | pimple - small solid elevation |
polyp | stalk like growth protruding upward or outward from membrane |
dermitits | acute or chronic inflammation of skin, seen in different forms |
callus | painless thickening of epidermis |
macule | freckles |
eczema | acute or chronic inflammation characterized by erythema, papules, vesicles, pustues, scales, crusts, scabs - starts with itching |
ulcer | open sore/lesion with inflammation |
burn | tissue injury by flame, heat, etc. |
blister | small thin walled lesion with clear fluid |
arrector pili muscle | surrounds hair follicle - when contracts results in goosepimples |
sweat gland | aka sudoriferous - originates in dermis and produces watery secretion through pore in epidermis |
sebacous gland | oil gland (sebum) - lubricates and waterproofs hair |
ceruminous gland | modified sweat gland present in external ear - produces cerumen (wax) |
squamous cell carcinoma | malignancy of squamous cells of epithelial tissue - fast growing, greater potential for metastasis |
basal cell carcinoma | most common malignant epithelial tumor |
Kaposi's sarcoma | malignant lesions - purple-brown nodule, common in men with AIDs |
functions of integumentary system | protection, temperature regulation, sensations |
epidermal layer consists of | melanin, keratin and basal layer |
basal layer | lower layer of epidermis - produces new cells |
gangrene | tissue death due to loss of adequate blood supply |
herpes zoster | shingles |
malignant melanoma | funky looking moles :) |
nevus | mole |
psoriasis | auto immune disease - no cure - chronic skin disorder - silvery white scales aka pruritus |
Alopecia | Partial or complete loss of hair |
Ecchymosis | Bruise/black and blue mark |
Nuchal rigidity | Stiff neck |