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Heart Valves ensure
blood flows in one direction only
Atrium
receives blood returning from the heart
Ventricles
pumps blood out into blood vessels
Right Atrium
-Receives blood from the Venae cavae
-Sends blood to the right ventricle
The right ventricle
-Receives blood from the right atrium
-Sends blood to the lungs
Left Atrium
-Receives blood from the Pulmonary Veins
-Sends blood to the Left ventricle
Left Ventricle
-Receives blood from the left atrium
-Sends blood to the body
Venae Cavae
-Receives blood from the veins
-Sends blood to the right atrium
Pulmonary Arteries
-Receives blood from the right ventricle
-Sends blood to the lungs
Aorta
-Receives blood from the left ventricle
-Sends blood to the arteries
Blue blood vs. Red blood
Blue - less oxygenated blood
Red - well oxygenated blood
blood is oxygenated
in the lungs
coranary arteries
- branches off from the aorta into capillaries that nourish the heart
- then goes into coronary veins that empty right into the right atrium at the coronary
sinus
Pericardium
- membranous fluid-filled sac that encases the heart
-fluid lubricates the heart as it beats in the sac
friction rub
when there is inflammation of the pericardium and the heart rubs against the sac