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Integumentary System

TermDefinition
What are the skins two layers? Epiderms and Dermis
EPIDERMIS superficial layer
DERMIS Deep layer
HYPODERMIS Subcutaneous tissue; helps attach skin to bones and skeletal muscle
STRATUM CORNEUM Most superficial layer of the epidermis Most cells are dead and flat;accumulation of KERATIN Impermeable barrier Most bacteria, virsus and water cannot penetrate it.
STRATUM BASALE Deepest layer of the epidermis Cells constantly divinding (germinating), pushing older ces up towards STRATUS CORNEUM
KERTINOCYTE Most commom sell type in the epiderms Accumulates keratin making epidermis waterproof and bacteria and virus resistant.
MELANOCYTE Makes the pigment MELANIN All peope have the same amount
DERMIS Deep to the epidermis Composed of conective tissue with large amounts of collagen fibers
SUBCUTANEOUS TISSUE aka HYPODERMIS Made up of adiposer (fat) tissue and loose connective tissue.
What are the three skin lesion categories? Primary, secondary, and vascular
PRIMARY LESIONS Macules and vesicles Originate from disease or body changes
SECONDARY LESIONS Ulcers and keloids Varying causes
VASCULAR LESIONS Anomalies of the blood to inlcude TELANGIECTASIAS, HEMANGIOMAS, ECHYMOSES
SEBACEOUS GLANDS Oil gland found in the derms
HAIR FOLLICLES Tube-like structures in the skin's dermis
ARRECTOR PILI MUSCLES Muscles attached to most hair follicles and found in the dermis
What are the two types of sweat glands? ECCRINE and APOCRINE
ECCRINE SWEAT GLANDS Produces a watery tpe of sweat Most numerous Activated by increase in body temp Located on forehead, back, palms, and soles
APOCRINE SWEAT GLANDS Produces thicker type of sweat Most concentrated where course hair is such as armpit and groin Become active during puberty Primarliy stimulated by nervousness, pain, or emotional stress
SEBUM Oily substance secreted by the sebaceous glands
LUMULE Visible, white, hald-moon-shaped area at the base of the nail
NAIL MATRIX Stratum basale surrounding the nail root is thickened forming this
EPONYCHIUM Cuticle;narrow band of dead skin tat overhangs tje proximal edge of the body of nail
What happens when blood vessels in the shin vasodilate? Increases heat loss
What contains a variety of tissue types and accesory organs? DERMIS
What is an accesory organ of the skin that is found in the dermis and the sites at which hair emerges? FOLLICLE
OXYGENATED Having been to the ungs and carrying oxygen in hemoglobin
KERATIN Tough, hard protein contained in skin, hair, and nails
What acceory organs other than the skin does the integumentary system consist of? Nails, hair follicles and skin glands
BULLA Large blister or cluster of blisters; primary
PURPURA Purple-red bruise, usually the result of clotting abnormlaities; vascular
TUMOR Swelling of abnomral tissue growth; primary
PETECHIAE Pinpoint skin hemorrhages resulting from a bleeding disorder; vascular
ULCER Wound resulting from tissue loss; secondary
During exercise, the muscles contract, creating a rise in the body temperature, which leads to what? VASODILATION
What layer of the skin is the dermis? Middle(second)
What structures are contained in the dermis? Sweat glands Arrector pili muscles Collagen Fibers Hair Follicles Sebaceous Glands
What are the skins accesory organs? Nails Hair follicles Sebaceous glands Sudoriferous glands
Where are the majority of the sweat glands located? The DERMIS
VASOCONSTRICTION The blood vessels of the skin constrict, reducing blood flow to its surface, this retaining heat.
VASODILATION The blood vessels of the skin dilate, increasing blood flow to the skin's surface, therefore allowing for heat loss.
What tissues are containined in the dermis? Epithelial, connective, muscles and nervous tissues
What structures are contained in the DERMIS? Hair follicles Sweat glands Sebaceous glands Arrecto pili muscles Collagen fibers
Created by: lizd3281
 

 



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