heart

veins

return blood to the heart

cardiac cycle

A complete heartbeat consisting of contraction and relaxation of both atria and both ventricles

systemic circuit

Carries blood to and from the body

bicuspid/mitral valve

allows blood to flow from the left atrium to the left ventricle

tricuspid valve

allows blood to flow from the right atrium to the right ventricle and closes to prevent back flow of blood back into the atrium

pulmonary artery

carries deoxygenated blood to the lungs from the right ventricle

pulmonary veins

carries oxygenated blood from the lungs to the left atrium

Arteries

carry blood away from the heart

left ventricle

chamber of the heart that receives blood from the left atriam and pumps blood blood into the aorta

left atrium

chamber of the heart that receives blood from the lungs via the pulmonary vein

right ventricle

chamber that receives blood from the right atria and pumps blood to the lungs via the pulmonary artery

right atrium

deoxygenated blood flows into this chamber via the superior and inferior vena cava

ventricles

lower chambers of the heart that pump blood into vessels to leave the heart.

sinoatrial node (SA node)

pacemaker of the heart that controls the heart beat

lub dub

the sound of the closure of valves and rushing of blood through the heart that can be heard

pulmonary valve

valve positioned between the right ventricle and the pulmonary artery

aortic valve

valve that allows blood to pass from the left ventricle through the aorta and to the rest of the body

superior & inferior vena cava

veins that carry deoxygenated blood to the right atrium from the systemic circuit