Flashcards in Chapter 3: Integumentary System Deck (155):
What is the largest organ in the body?
Where are the sensory receptors located?
Within the middle layer of the skin
What dot the sensory receptors detect?
What are sweat glands?
They assist body in maintaining internal temperature that creates a cooling effect when sweat evaporates.
What are sebaceous glands?
They are oil glands that lubricate the skin surface and produces sebum.
How does the skin cool?
Dilate superficial blood vessels to release heat
How does the skin conserve heat?
Constrict superficial blood vessels to keep warm blood away from surface.
Continuous fat layer acts as insulation.
What are the three layers of the skin?
Thin, outer membrane layer composed of flat like cells arranged in strata. Has no blood supply or connective tissue
Middle, fibrous connective tissue layer composed of connective tissue and collagen fibers, giving it flexible strength. Has very good blood supply.
innermost layer of fatty tissue, composed of lipocytes and acts as insulation for heat/cold.
The deepest layer in the epidermis. Cells continuously grow and push out the old cells toward the surface that shrink die, and fill with keratin.
a hard protein in dead cells that allow skin to act as a barrier to infection
Special cells of the basal layer that produces melanin which gives skin color and protects against ultraviolet rays.
What organs are located in the Dermis?
What are the 4 parts of the hair?
Arrector pili muscle
How is the hair shaft formed?
Within the hair follicle, deep cells of hair root force older cells to move upward towards surface
What gives hair its color?
Slip of smooth muscle that causes hair to "stand up"
What are the 6 parts of the nail?
What is the Nail Body?
Flat plate of keratin
What is the nail bed?
Connects nail body to underlying tissue
What is the cuticle?
Soft tissue that covers nail root.
Where does sweat travel to int he sweat gland?
To surface in sweat duct.
Found in the pubic or underarm areas that produces an odor when sweating.
pertaining to the skin
pertaining to the skin
pertaining to upon the skin
pertaining to under the skin
pertaining to within the skin
pertaining to under the skin
pertaining to the nail
friction scraping away skin surface
condition of producing no sweat
hardened sebum in hair follicle; blackhead
injury caused by a blow; causes swelling, pain, and bruising
bluish tint to the skin caused by deoxygenated blood
fluid-filled sac under the skin
loss of normal skin color
blood collecting under the skin following blunt trauma; a bruise
red flushing of the skin
having reddened or flushed skin
thick layer of dead tissue develops over a deep burn area
crack-like lesion on skin
excessive hair growth
redness of skin due to increased blood flow
abnormal amount of pigmentation
scaly and dry skin
general term for injury or abnormality
white skin from lack of skin pigment
flat, discolored spot on skin
condition of cell or tissue death
pigmented skin blemish, birthmark, or mole; usually benign
form, solid mass larger than 0.5 cm
softening of nails
abnormal paleness of skin
small, solid raised spot smaller than 0.5 cm
spots from minute hemorrhages under skin
skin reacts abnormally to light
skin hemorrhage due to fragile blood vessels
infection producing pus; dead bacteria, white blood cells, and tissue debris
raised spot on skin containing pus
having pus on or within the skin
containing or producing pus
open sore in skin
hives; eruption of wheals with severe itching
small, fluid-filled, raised spot; blister
small, round, swollen area; typical of allergic skin reaction
abnormally dry skin
collection of pus in skin
inflammation of sebaceous glands and hair follicles with papules and pustules
chronic form of adult acne with redness and tiny pimples, primarily on nose
common form of teenage acne with comedo, papules, and pustulates
genetic condition; unable to make melanin; white hair and skin, and red eyes
basal cell carcinoma
cancerous tumor in basal skin layer; common cancer; rarely metastasizes
skin damage caused by fire, electricity, ultraviolet light, or caustic chemicals; percentage of skin burned is estimated by Rule of Nines
First Degree Burn
skin reddened and painful; no blisters; damage to epidermis
Second degree burn
skin reddened and painful with blisters; damage to epidermis and dermis
Third degree burn
skin charred; epidermis and dermis burned away; subcutaneous layer exposed
diffuse acute infection of connective tissue of skin
open sore caused by pressure over bony prominences; caused by loss of blood flow to skin
inflammation of the skin
presence of a skin condition
late stages of gangrene; affected area becomes dried, blackened, and shriveled
superficial dermatitis; redness, vesicles, itching, and crusting
tissue necrosis due to loss of blood flow
skin becomes dry, scaly, and keratinized
highly infections bacterial infection with pustules that rupture and crust over
skin cancer seen in AIDS patients; brownish-purple lesions
thick hypertrophic scar
condition of excessive growth and thickening of epidermis layer
torn or jagged wound
malignant melanoma (MM)
dangerous form of cancer; begins in melanocytes; quickly metastasizes
chronic inflammatory condition with papules forming "silvery scale" patches
contagious viral infection; german measles
sebum filled sac forms around sebaceous gland
squamous cell carcinoma (SCC)
cancer of epidermis layer; may invade deeper tissue and metastasizes
congenital collection of dilated blood vessels; birthmark
systemic lupus erythematosus (SLE)
chronic disease of connective tissue; injures skin, joints and kidneys; produces red, scaly butterfly rash across face
fungal infection; itching and scaling lesions
fungal infection on scalp; ringworm
fungal infection of foot; athlete's foot
contagious viral infection; chickenpox
warts; benign growth caused by a virus
disappearance of pigment from skin in patches; causes milk-white lesions
area of gangrene with secondary bacterial infection and pus
absence or loss of hair; baldness
furuncle involving several hair follicles
bacterial infection of hair follicle; reddened, pain, and swelling; a boil
fungal infection of hair
infected nail bed
fungal infection of nail
infection of skin fold around nail
Culture and Sensitivity (C&S)
grows bacteria removed from infected area to identify infecting bacteria; then determines sensitivity to various antibiotics
removal of piece of tissue to examine under a microscope; aids in diagnosis
scraping cells from tissue to examine under micrscope
thin piece of tissue is cut from frozen specimen for rapid examination under microscope
scrapings from lesion is cultured and then examined under microscope
transfer of skin from one normal area to cover another site
skin graft from one person to another, also called homograft
skin graft from one person's own body
skin graft from an animal of another species; usually a pig; also called a heterograft
instrument for cutting sin or for producing thin transplants of skin
destruction of tissue by using chemicals, electricity, heat, or freezing
use of extreme cold to freeze and destroy tissue
removal of superficial skin lesion with a scraper
removal of foreign material and dead or damage tissue from wound
using an electric current to destroy tissue
incision and drainage
making and incision to drain material such as pus
surgical removal of a nail
abrasions using chemicals; chemical peel
abrasion using wire brushes or sandpaper; removes scars, tattoos
removal of lesion using a laser beam
removal of fat beneath skin by means of suction
surgical removal of excess skin to eliminate wrinkles; face lift
kill mites or lice
reduce severe itching
treat herpes simplex infection