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Circulatory system 1

Components & Functions

TermDefinition
aorta largest artery in the body
vena cava the largest vein in the body
atrium the upper chamber of the heart
ventricle the lower chamber of the heart
mitral valve valve between the left atrium and the left ventricle, also called bicuspid valve
tricuspid valve located between the right atrium and the right ventricle
pericardium double-layered membrane surrounding the heart
myocardium muscular, middle layer of the heart
endocardium inner lining of the heart
artery largest type of blood vessel; carries blood away from the heart to all parts of the body
vein thin-walled vessel that carries blood from body tissues and lungs back to the heart
arteriole small artery
venule small vein
capillary smallest blood vessel
erythrocyte red blood cell
leukocyte white blood cell
thrombocyte platelet
septum the dividing wall between the right and left sides of the heart
circuit pathway, circulation
interatrial septum separates the two upper chambers of the heart
interventricular septum separates the two lower chambers of the heart
diastole relaxation phase of the heartbeat
systole contraction phase of the heartbeat
pulse the beat of the heart as felt through the walls of arteries
valve structure in veins or in the heart that temporarily closes an opening so that blood flows in only one direction
Created by: MaiNguyen
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