Name the 4 functions of the skin.
1. Provides protective membrane
2. The glands lubricate (sebaceous) and cool (sudoriferous) the skin
3. Receives information through the receptors
4. Maintenance of body temp.
What are the 3 layers of the skin?
- Epidermis
- Dermis
- Subcutaneous layer (hypodermis)
What layer of the skin might vaccines be injected into?
The muscle.
What layer of the cell do they reproduce?
The basal layer
The dermis is made of:
elastin (elastic) and collagen fibers
The subcutaneous layer contains adipocytes, therefore it ___.
insulates the body and a storage for energy.
What is the difference between sebaceous and sweat glands?
Sebaceous - secretes oil directly into the hair follicle for lubrication
Sweat - secretes into pores to moisten and cool the body
cauter/o
heat, burn (cautery)
combining word of white
albin/o
cutane/o
skin (cutaneous)
caus/o
burn, burning (caustic)
diaphor/o
profuse sweating (diaphoresis, sweating due to an MI, symptom)
erythem/o, erythemat/o
redness (erythema or erythematous)
hidr/o
sweat (hyperhidrosis, sweating a lot a condition)
itcthy/o
scaly, dry (ichthyosis)
lip/o (think of liposuction)
fat
leuk/o
white (leukoplakia, white spots on skin)
melan/o
black, pigment (melanocyte)
myc/o
fungus (mycoses, mycotic)
onchy/o
nail
pil/o
hair, hair follicle (pileous)
rhythid/o
wrinkle (rhytid)
seb/o
sebum
squam/o
scale-like, flat (squamous cells)
steat/o
fat (steatadenoma)
trich/o
hair (trichosis)
ungu/o
nail (subungual)
xanth/o
yellow (xanthoma)
xer/o
dry (xeroderma)
What is ecchymosis?
Tiny petechia grouped together that appear as big marks.
Petechia are ___.
small pinpoint hemorrhages.
Why is it bad to have ecchymosis and petechia?
Because the bruising isn't caused by trauma, seemingly appears for no reason.
What is urticaria?
Hives; allergic reaction with red, round wheels on the skin.
Pruritus is ___.
itching; (not inflammation).
What is cellulitis?
Infection within the skin layers, typically with an open wound where infection enters the skin.
Exzema (atopic dermatitis) is ___.
Inflammation of the skin caused by an allergy with erythematous (redness) and papulo-vesicular lesions.
What is gangrene?
Tissue death accompanied with the loss of blood supply.
What is scabies?
Tiny mites (parasitic) burrow into skin, eat skin flakes and blood, and can cause infectious pruritus.
What is verruca?
Warts, caused by virus.
What is xanthoderma?
Yellowing of the skin due to accumulation of fat (usually around the eyes).
What is jaundice?
Yellowing of skin due to bilirubin (dye for vomit) deposition.
What does cauterization do?
Using heat to destroy tissue (usually to stop bleeding).
What is cryosurgery?
Destroying tissue with subzero temps. (freezing) using liquid nitrogen (cold therapy).
What is curettage (curet)?
Scrape lesion with sharp curet.
What is onychia?
Inflammation of the nail folds.
combining form of black
anthrac/o
combining form of green
chlor/o (chlorosis)
cirrh/o
yellow
jaund/o (think of jaundice)
yellow
lute/o
yellow
poli/o
gray (poliomyelitis)
What combining form refers to the same color as jaund/o?
xanth/o