Cardiovascular+System+notes-+kat

Heart consists of Blood travel in heart
 * 2 atrias
 * 2 ventricles (right= blue because its doesn't have oxygen and left=red because it has oxygen)
 * left ventricle and left atrium are on the right looking at someone else's heart
 * right ventricle and right atrium are on the left looking at someone else's heart
 * 4 chambers
 * **veins** bring blood to heart, **arteries** take blood away
 * 1) Blood firsts comes from a vein to the right atrium
 * 2) Then goes from right atrium to right ventricle while heart is relaxed
 * 3) Then from right ventricle to lungs when the heart contracts
 * 4) Oxygenated (red) blood goes from lungs to enter left atrium while heart is relaxed
 * 5) Enters left ventricle while relaxed
 * 6) So when the heart contracts blood (red) and leaves left ventricle through the arteries
 * 7) veins (blue)--> right A (blue)--> right V (blue)--> lungs--> left A (red)--> left V (red)--> arteries (red)
 * Pulse**: feeling a pulse of an artery every time the heart contracts
 * **Lub DUB sound**: valve between the atrium and the ventricle and a valve between the ventricle and the artery (aorta) DUB
 * **Blood pressure**: 120/80--> **Systole**: big number is the pressure blood has after the heart contracts, **Diastole**: smaller number the blood pressure when the heart is relaxed.