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43 Cards in this Set

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aorta
Largest artery in the body
arteriole
small artery
artery
Largest type of blood vessel; carries blood away from the heart to all parts of the body.
atrioventricular bundle
(bundle of His)
specialized muscle fibers IN the wall b/t the ventricles that carry the electric impulses TO the ventricles
atrioventricular node (AV node)
Specialized tissue at the base of the wall b/t the two upper heart chambers.
Electrical impulses
Pass from pacemaker (SA node) through the AV node to the bundle of His
atrium (plural: atria)
one of two upper chambers of the heart
capillary
smallest blood vessel.

(Materials pass to and from the bloodstream through the thin capillary walls)
carbon dioxide (CO2)
Gas (waste) released by body cells, transported via veins to the heart and then to the lungs for exhalation
coronary arteries
blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle
deoxygenated blood
blood that is oxygen poor
diastole
relaxation phase of the heartbeat
endocardium
inner lining of the heart
endothelium
innermost lining of blood vessels
mitral valve
valve b/t left atrium and left ventricle (aka bicuspid valve)
murmur
abnormal heart sound caused by improper closure of heart valves
myocardium
muscle layer of the heart
oxygen
gas that enters the body through the lungs and travels to the heart to be pumped via arteries to all blood cells
pacemaker
specialized tissue in right atrium that begins the heartbeat. (aka sinoatrial node or SA node)
pericardium
sac-like membrane surrounding the heart
pulmonary artery
artery carrries oxygen-poor blood from heart to lungs
pulmonary circulation
flow of blood from heart to lungs to heart, etc
pulmonary valve
b/t the right ventricle and pulmonary artery
pulmonary vein
carries oxygenated blood from lungs to heart (left atrium)
pulse
beat of the heart as felt through walls of arteries
septum (plural: septa)
partition (b/t right and left sides of heart)
SA node (sinoatrial node)
pacemaker of the heart
sphygmomanometer
instrument to measure blood pressure
systemic circulation
flow of blood from body cells to heart to body cells, etc
systole
contraction phase of the heartbeat
tricuspid valve
b/t right atrium and right ventricle. (it has 3 leaflets/cusps)
valve
structure in vein or heart that temporarily closes an opening so that blood only flows in one direction
vein
thin-walled vessel that carries blood from body, tissues and lungs to the heart. Also, contains valves
vena cava
largest vein in the body
ventricle
one of two lower chambers in the heart
venule
small vein
stenosis
narrowing
lumen
opening
auscultation
listening to sounds within the body using a stethoscope
dilation
opening
constriction
to tighten or narrow
anastomoien
to provide a mouth
manometer
measures pressure