health test 2

22 cards·by gracemotsay

athersclerosis

arterial condition; inflammation, scarring and buildup of mealy deposits along artery walls

blood pressure

force of blood pulsating artery walls

benign

a tumor that grows slowly, doesn't spread and isn't cancerous

malignant

tumor that grows aggressively, invades tissue, and can spread all over body

HDL

good cholesterol; transports excess cholesterol back to liver for recycling

LDL

bad cholesterol; excess degrades over time, releasing cholesterol load into bloodstream. becomes trapped in blood

systole

when heart contracts

diastole

when heart relaxes

viens

carry blood back to heart

arteries

carry blood away from heart

epedemic

spread of disease from person to person very quickly in one location

pandemic

worldwide epidemic of a disease

bacteria

single celled micro-organisms found throughout nature

chronic disease

disease that develops gradually and continues over a long period of time

transmission

contact with infected people or animals

vector

any agent that carries and transmits disease

infections

caused by pathogens

communicable

can be spread from person to person

host

a person, plant, animal in which or on which pathogens live and produce

carrier

a person infected with a pathogen who doesn't show symptoms but is infectious

pathogens

agents that cause disease

reservoir

the natural environment for any particular pathogen where it accumulates in large numbers