 | Term | Definition |
| |
heart |
the main pump of the circulatory system |
| |
blood |
liquid tissue containing blood cells in suspension |
| |
blood vessels |
the tubes through which blood flows to and from different body parts |
| |
atrium |
receives blood coming from the lungs or body |
| |
ventricle |
pumps blood to the lungs or body |
| |
valves |
prevent blood from blowing back |
| |
artery |
vessel that carries blood away from the heart |
| |
vein |
vessel that returns blood to the heart |
| |
capillaries |
thin walled blood vessels that allow for diffusion of gases |
| |
diastole |
when ventricular muscles are relax and let blood flow in |
| |
systole |
when the muscles contract, pumping the blood out |
| |
right atrium |
chamber that receives blood from the vena cavae |
| |
right ventricle |
chamber that pumps blood to the lungs |
| |
left atrium |
chamber that receives blood from the lungs |
| |
left ventricle |
chamber that pumps blood into the aorta |
| |
AV valves |
right and left valves between atria and ventricles |
| |
pulmonary valve |
prevents backflow into the right ventricle |
| |
aortic valve |
last valve that blood passes through on its way to the body |
| |
pulmonary trunk |
vessel leaving the right ventricle that splits into the right and left pulmonary arteries |
| |
pulmonary artery |
carries deoxygenated blood to the lungs |
| |
pulmonary vein |
carries oxygenated blood from the lungs to the left atrium |
| |
aorta |
artery leaving the heart carrying oxygenated blood |
| |
coronary artery |
branches from ascending aorta, supplies oxygent to heart muscle |
| |
brachiocephalic |
branches into right carotid (carries blood to the right side of the brain) and right subclavian (carries blood to the right arm) |
| |
left carotid artery |
sends blood to the left side of the brain |
| |
left subclavian artery |
sends blood to the left arm |
| |
superior vena cava |
vein that collects blood from head and arms |
| |
inferior vena cava |
vein that collects blood from the abdomen and legs |
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