Ans.A)oxygenated blood comes in to the hearts left atrium, is pumped into the left ventricle, then pushed throughout the body.
Heart is divided into four chambers- two atria and two ventricles.
Right atrium receives deoxygenated blood from superior and inferior vena cava and from coronary sinus.
Blood then moves to right ventricle and then to lungs for oxygenation.
Now oxygenated blood from lungs enters the left atrium and then pumped to left ventricle and finally it is pumped into aorta for distribution to various body parts and organs.
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