Lpn Test 7

Front 1

The largest organ in the body

Back 1

skin

Front 2

The study of skin and skin disorders

Back 2

Dermatology

Front 3

The thin outer layer of the skin composed of stratified squamous epithelium

Back 3

Epidermis

Front 4

Lies on top of the dermis and thus has access to a rich supply of blood

Back 4

Stratum Germinativum

Front 5

Protein that hardens and flattens the cells as they move toward the outer surface of the skin; also makes the skin water resistant

Back 5

Keratin

Front 6

Surface layer of the epidermis that is composed of about 30 layers of dead, flattened, keratinized cells.

Back 6

Stratum Corneum

Front 7

About 500 mL/day of water is lost through the skin, this process is called

Back 7

Insensible Perspiration

Front 8

The largest portion of the skin; it is composed of dense, fibrous connective tissue

Back 8

Dermis

Front 9

Layer that lies under the skin and is composed primarily of loose connective and adipose tissue. Helps insulate the body from extreme temperature changes and it anchors the skin to the underlying structures

Back 9

Subcutaneous Layer

Front 10

Cells that secrete a skin-darkening pigment from deep within the epidermal layer of the skin

Back 10

Melanocytes

Front 11

skin-darkening pigment that stains the surrounding cells causing them to darken

Back 11

Melanin

Front 12

Why the skin darkens:

Back 12

to protect the deeper layers from the harmful effects of radiation.

Front 13

What happens if the melanocytes completely fail to secrete melanin?

Back 13

Albinism- the skin, hair, and the colored part of the eye are white

Front 14

a loss of pigment in certain areas of the skin, creating patches of white skin

Back 14

Vitiligo

Front 15

tends to metastasize very rapidly and is one of the cancers most difficult to treat

Back 15

Malignant Melanoma

Front 16

Yellow pigment that the skin also contains in addition to melanin

Back 16

Carotene

Front 17

Condition in which poorly oxygenated blood causes the skin to look blue

Back 17

Cyanosis

Front 18

A constriction of the blood vessels in the skin and a decrease in the amount of oxygenated blood resulting pale or ashen color

Back 18

Pallor

Front 19

The excessive growth of hair

Back 19

Hirsutism

Front 20

Attached to the hair follicle is a group of smooth muscle cells called

Back 20

Arrector Pili

Front 21

The loss of hair

Back 21

Alopecia

Front 22

Located at the base of the nail; half-moon shaped

Back 22

Lunula

Front 23

Oil glands associated with hair follicles and are found in all areas of the body that have hair

Back 23

Sebaceous Glands

Front 24

Oily substance that flows into the hair root and then out onto the surface of the skin

Back 24

Sebum

Front 25

When the sebum is exposed to the air and dries out, it turns black, forming

Back 25

Blackhead

Front 26

When a locked sebum becomes infected with staphylococci

Back 26

Pimple

Front 27

Another word for sweat glands that are located in the dermis

Back 27

Sudoriferous Glands

Front 28

Glands that are usually associated with hair follicles and are found in the axillary and genital areas

Back 28

Apocrine Glands

Front 29

Located throughout the body and are especially numerous on the forehead, neck, back, upper lip, palms, and soles

Back 29

Eccrine Glands

Front 30

found in the external auditory canal of the ear

Back 30

Ceruminous Glands

Front 31

The mechanism whereby the body balances heat production and heat loss

Back 31

Thermoregulation

Front 32

An excessive decrease in body temperature

Back 32

Hypothermia

Front 33

An excessive increase in body temperature

Back 33

Hyperthermia

Front 34

whenever heat is lost from a warm object (the body) to the cooler air surrounding the warm object

Back 34

Radiation

Front 35

The loss of heat from a warm body to a cooler object in contact with the warm body

Back 35

Conduction

Front 36

The loss of heat by air currents moving over the surface of the skin

Back 36

Convection

Front 37

Occurs when a liquid becomes a gas

Back 37

Evaporation

Front 38

The thermostat of the body is located in a part of the brain called the

Back 38

Hypothalamus

Front 39

A disorder of the skin in which the subaceous glands oversecrete sebum

Back 39

Acne

Front 40

Also called a fever-blister; a collection of watery vesicles caused by infection by the herpes simplex virus

Back 40

Cold Sore

Front 41

Inflammation of the skin that may be caused by a variety of irritants

Back 41

Dermatitis

Front 42

Also called Urticaria; caused by an allergic reaction characterized by red patches (wheals) and generally accompanied by intense itching

Back 42

Hives