BIOA02H3 Chapter Notes - Chapter 5: Pulmonary Vein, Pulmonary Artery, Coronary Circulation

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Hearts & circulatory systems: closed & open circulatory systems. Series of connected vessels; blood flows: heart arteries capillaries veins heart; high-pressure system; can allow flow to target tissues. Blood pressure can be kept high leading to high lvls of blood flow to tissues high lvls of oxygen & nutrient delivery. Blood vessels don"t form complete enclosed circuit; heamolymph flow: heart arteries dumped body cavity/sinuses veins heart; low- pressure system. Left: high-pressure pump; oxygenated blood: lungs systemic tissues. Right: low-pressure pump; deoxygenated blood: body lungs. Blood vessel: pumps oxy blood from lungs heart (la) Pumps deoxy blood from systemic circulation heart (ra) Valve b/w ventricles & arteries (right from pulmonary artery; left from aorta) Main artery of the heart; pumps oxy blood from lv (semilunar) body. Pumps deoxy blood from rv (semilunar) lungs: mammalian fetal circulation. In which mammalian fetus receives blood from (via umbilical vein) La); shunts blood into la, reduce blood flow into lungs.

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