Med- term Chpt. 16 skin (Integumentary system)

What are the functions of the skin ?

What are the functions of the skin ?

1. Provides protective membrane

2. lubricates and cools the body through skin glands.

3. has sensory receptors that feel things.

4. Helps maintain body temperature.

What are the three layers of the skin?

1. Epidermis- outermost layer of skin (thin cellular membrane).

2. Dermis- middle layer of skin (contains dense fibrous, connective tissue and nerve endings.)

3. Subcutaneous tissue- innermost layer of the skin, containing fat tissue.

Apocrine sweat gland

One of the largest dermal exocrine glands located in the axilla and genital areas.

Basal layer

the deepest region of the epidermis, gives rise to all epidermal cells.

cuticle

Band of epidermis tissue found at the base and sides of the nail plate.

Eccrine sweat gland

most numerous sweat-producing exocrine gland in the skin.

Epithelium

Layer of skin cells forming the outer and inner surfaces of the body.

hair follicles

sacs within which each hair grows.

integumentary system

the skin and its accessory structures such as hair and nails.

keratin

hard protein material found in epidermis, hair, and nails.

Lunula

Half-moon- shaped, whitish area at the base of the nail.

Paronychium

soft tissue surrounding the nail border.

pore

is a tiny opening on the surface of the skin.

sebaceous gland

oil-secreting gland in the dermis that is associated with hair follicles. (secretes sebum)

Squamous epithelium

Flat, scale-like cells composing the epidermis.

stratified

means arranged in layers.

Stratum (strata)

A layer of cells.

Cutane/o, derm/o, and dermat/o

skin

caus/o and cauter/o

burn, burning or heat

diaphor/o

profuse sweating

erythem/o and erythemat/o

redness

hidr/o

sweat

ichthy/o

scaly, dry

melan/o

black

• leuk/o and albin/o = white

onych/o and ungu/o

nail

myc/o

fungus

kerat/o

hard, horny tissue

phyt/o

plant

pil/o or trich/o

har, hair follicle

py/o

pus

rhythid/o

wrinkle

seb/o

sebum

squam/o

scale -like

lip/o and steat/o

fat

xanth/o (xanthoma)

yellow

xer/o

dry

Albin/o (albinism)

white

Ecchymosis

blue-purple marks on the skin.

petechia

small pinpoint hemorrhage

Urticaria

An acute allergic reaction with red, round wheals on the skin.

Acne

Papular and pustular eruption of skin with increased production of sebum.

Tinea

infection of the skin caused by fungus.

Vitiligo

loss of pigment in areas of the skin.

Cryosurgery

destroy tissue with subzero temperatures using liquid nitrogen.

Curettage

Scrape lesion with sharp curet.

Mohs Surgery

removes thin layers of growth to examine under a microscope (basal and squamous cell).

-esis

condition

-lysis

breakdown; separation; destruction; loosening.

-osis

condition, usually abnormal

-ism

condition, disease or abnormal state.

-listhesis

slipping or displacement

-physis

Growth or nature

-trophy

development or nourishment

-plakia

plaque

-ous

pertaining to