The two sides of the heart work together thus make a rhythm that enhances stead blood flow to the heart, out of the heart and other body parties to supply oxygen and nutrients. The waste products are as well delivered in the organs which eliminate them. The arteries carry blood from the heart to other body parties; this is blood rich in oxygen. The veins help carry blood back to the heart ( Mader and Cox, 2006 ), this blood is less of oxygen hence termed as deoxygenated blood because the other body parts have utilized the oxygen that was supplied and because it has no oxygen it’s carried back to the heart to be pumped to the lungs for more oxygen to be added.
The right side of the heart has two large veins, inferior and superior vena cava which carries oxygenated blood into the right atrium and upon contraction, blood flows to right ventricle through the open tricuspid valve to when its full of blood then it closes which make the ventricle to contract thus forcing the blood to leave the heart through the pulmonary valve to the pulmonary artery to the lungs where oxygenation takes place ( Mader and Cox, 2006 ). It should be noted that deoxygenated blood goes to the lungs via the pulmonary artery.
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The left side of the heart works concurrently as the right, the pulmonary vein takes oxygenated blood from the lungs to the left atrium which contracts to make blood flow to the left ventricle via the mitral valve that shuts when the ventricle is full of blood. The shutting is to prevent blood from flowing back when the ventricle contracts. Upon contraction, the blood is forced out of the heart via the aorta valve to the arteries which carry the oxygen-rich blood to other parts of the body then eventually to the veins which carry it back to the heart ( Mader and Cox, 2006 ).
References
Mader, S. S., Windelspecht, M., & Cox, D. (2006). Human biology . New York: McGraw-Hill.
