Pulmonary arteries Pulmonary veins
Semilunar valve Semilunar valve
Right atrium Left atrium
Tricuspid valve Mitral valve
Right ventricle Left ventricle
HEART
Venae Cavae Aorta
Key
Deoxygenated blood
Oxygenated
Valves
Semilunar valves temporarily hold the blood in the ventricles to create pressure, efficient for pumping the blood out of the heart, while tricuspid and mitral valves hold blood in the atriums to regulate the blood flow into the heart
The oxygenate blood leaves the heart through aorta and enters arterial system which leads to the digestive tract, kidneys and the lower part of the body before entering systemic veins, into venae cavae and back to the heart.
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Work cited
https://www.google.com/search?q=blood+oxygenation+process&client=opera&hs=ww9&source=lnms&tbm=isch&sa=X&ved=0ahUKEwij4-OfoqPSAhUIJ8AKHR3YAusQ_AUICCgB&biw=1024&bih=660#imgdii=Wgp6fnbwoyv0rM:&imgrc=GZ9vo1ERBBIiPM :
