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If two variables increase together, you have observed a positive relationship.
AV Valve
The atrioventricular (AV) valve regulates blood flow from the atria to the ventricles in the heart.
Bundle of His
A collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the point of the apex of the fascicular branches.
Pulmonary Veins
Blood vessels that carry oxygenated blood from the lungs to the left atrium of the heart.
Left Atrium
The heart's upper left chamber that receives oxygen-rich blood from the lungs and pumps it into the left ventricle.
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