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skin

QuestionAnswer
Skin protects the body from disease and external injury.
Skin prevents dehydration.
desiccation- (the act of drying up)
Skin Regulates body temperature.
Vasoconstriction of the capillary vessels assists warming of the body.
vasodilation of the capillary vessels assists in cooling.
Skin is the Receptor of stimuli.
receptors specialized for touch, pressure, temperature, and pain.
Skin Regulates body fluids.
Skin has Selective absorption.
epidermis Layer of tissue with no nerve supply or blood.
papillary Layer of the dermis; contains loose connective tissue.
reticular Lower layer of skin; contains thick, collagen fibers.
dermis Also called the corium, it lies directly beneath the epidermis. Hair follicles, oil glands (sebaceous), and sweat glands are located in dermis.
subcutaneous Connective tissue that contains fat (adipose tissue) and connects organs to underlying skin. Also called the hypodermis.
sebaceous Oil-secreting gland of the skin. Produces an oily substance called sebum.
arrector pili A type of smooth muscle that moves hairs.
sudoriferous Also called sweat glands, these glands open as pores on the skin’s surface. Found on palms, soles, armpits (axillae), and forehead.
pacinian corpuscle Found in subcutaneous tissue, these sense touch and vibratory pressure.
subcuticular means underneath the epidermis. Used often when closing the skin following an operative procedure.
the epidermis is composed of stratified squamous epithelium, which is between 20 and 30 cell layers thick.
keratin toughens and waterproofs the skin.
The dermis consists of collagenous, elastic, and reticular fibers.
An eponychium covers the area above the root of the nail. (Lay people call this a cuticle.)
The cuticle. eponychium
The protein which toughens and waterproofs the skin. keratin
The papillary and reticular layers. dermis
An oil gland. sebaceous
Underneath the epidermis. subcuticular
The process of drying up. desiccation
The uppermost layer of the dermis. papillary
The outermost layer of the skin is composed of this type of cell. stratified squamous epithelium
The lowermost layer of skin. subcutaneous layer
The muscle responsible for goose bumps. arrector pili
This layer, along with the papillary layer, makes up the dermis. reticular
Sweat gland. sudoriferous gland
The nerve ending responsible for recognizing vibration and pressure. pacinian corpuscle
The outermost layer of skin. epidermis
abrasion The wearing away of the epidermis by a scraping movement.
blister A thin-walled sac containing serous (clear) fluid.
bleb A blister-like structure filled with serous fluid.
bulla A blister on the skin, greater than 5 mm in diameter, with thin walls filled with fluid.
Plural of bulla is bullae.
callus A localized buildup of layers of the epidermis caused by increased pressure or friction.
A corn is a type of callus which is localized to the foot (especially around the toes).
cicatrix A scar. The new tissue which forms during healing of a wound.
comedo A noninflammatory lesion of acne, consisting of a plug of keratin within a dilated hair follicle.
Plural of comedo is comedones.
contusion A bruise, specifically an injury to the skin caused by blunt trauma that does not break the skin.
A localized buildup of layers of skin, caused by pressure or friction. callus
A plug of keratin within a dilated hair follicle. comedo
An injury caused by blunt trauma. contusion
A thin-walled sac containing serous fluid, greater than 5 mm in diameter. bulla
A scar. cicatrix
ABNORMALITIES
ecchymosis Hemorrhage under the epidermis that causes red or purple discoloration; a bruise.
eschar The crust that forms over a burn or gangrene.
excoriation A scratch; a linear or hollowed-out crusted area caused by scratching, rubbing, or picking.
furuncle Also called a boil, this is a painful localized bacterial infection that originates in a hair follicle or gland in the subcutaneous tissue.
lichenification Localized thickening and coarsening of the skin due to chronic irritation. This is usually caused by scratching an area for a prolonged period of time.
macule A flat discolored spot less than 1 cm in diameter. May be various shapes. The skin is discolored but is the same as surrounding skin. Freckles, flat moles, and tattoos are examples of macules. If the area is larger than 1 cm it is called a patch.
Plural of nevus is nevi.
papule A solid elevated lesion of skin less than 1 cm in diameter. This is a superficial lesion which may or may not be of different texture and color than the surrounding skin.
If the raised area is larger than 1 cm, more firm, and deeper it is called a nodule.
If it is quite large, elevated, and firm it is called a tumor.
nevus Any congenital lesion of the skin or, in other words, a birthmark.
A bruise. ecchymosis
An elevated lesion less than 1 cm in diameter. papule
The crust which forms over a burn. eschar
A boil. furuncle
A birthmark. nevus
Permanent dilatation of the blood vessels, visible through the skin. telangiectasia
A hive. wheal
Warts. verrucae
Itching. pruritus
A pinpoint, round spot caused by hemorrhage. petechia
Created by: trinka