right atrioventricular valve or tricuspid valve in the heart

aorta arteries arterioles artery atria atrioventricular atrium bicuspid blood capillaries chambers cycle deoxygenated electrical endocardium epicardium heart impulse lungs myocardium node organ oxygenated oxygenrich pulmonary pulse pump signal signals sinoatrial tissue tricuspid upper valve veins ventricle ventricles venules