Narrower than normal valve that slows blood flow from the heart chamber

Valve stenosis

Volume of blood pumped from the ventricles with each heartbeat

stroke volume

Severe chest pains

angina pectoris

Fibrous tissue that covers the heart

pericardium

Heart muscle

myocardium

Cardiac muscle fibers contracting rapidly and out of step with each other

fibrillation

Heart rate less than 60 beats per minute

bradycardia

Amount of blood pumped by one ventricle per minute

cardiac aoutput

Heart attack

MI

Thin layer of smooth tissue that lines the heart chambers

Endocardium

Inflammation of the pericardium

pericarditis

a condition that allows blood to leak back into the left atrium when the left ventricle contracts

mitral valve prolapse

damage to the heart cells due to a lack of blood flow

myocardial infarction

severe chest pain that occurs when the heart muscle is deprived of oxygen

angina pectoris

a condition which contraction impulses are prevented from getting through to the ventricles

heart block

slow heart rhythm

bradycardia

rapid heart beat

tachycardia

a condition in which the cardiac muscles contract out of syn with each other

fibrillation

also called left heart failure

congestive heart failure