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Structure between the Right Atrium & Right Ventricle that prevents backflow of blood
Aortic Semilunar Valve
Structure between the Left Ventricle and the Aorta that prevents backflow of blood
Pulmonary Semilunar Valve
Structure between the Right Ventricle and the Pulmonary Trunk that prevents backflow of blood
Region on the external portion of the heart that separates the atrias and ventricles
The heart's regulating system; composed of specialized muscle tissue that generates action potentials within the heart muscle to initiate the heart beat
SA Node (Sinoatrial Node)
The heart's natural pacemaker; it is found in the Right Atrium and initiates the heartbeat
AV Node (Atrioventricular Node)
Located in the interatrial septum, just above the ventricles, that receives the action potential from the SA Node
Series of branches found within the interventricular septum that receives an impulse from the AV Node and sends it onto the Bundle Brances of the heart
Series of branches found below the AV Bundle that receives the impulse and carries it onto the Purkinje Fibers
Purkinje Fibers (Conduction Myofibers)
Fibers located within the myocardium of the ventricles; once the action potential is received, it completes ventricular contraction of the heart
Largest artery in the body that carries OXYGENATED blood to all of the tissues & organs; it leaves from the left ventricle of the heart
Superior Vena Cava
Major vein that drains the head & neck of the body and carries DEOXYGENATED blood back to the right atrium of the heart
Inerior Vena Cava
Major vein that drains the lower part of the body and carries DEOXYGENATED blood back to the right atrium of the heart
Blood vessels that leave the right ventricle to take blood TO the lungs; these are the only arteries in the body to carry DEOXYGENATED blood
Blood vessles that return blood TO the heart andenter the heart at the left aftrium; these are the onlyl veins in the body to carry OXYGENATED blood
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