22. Why do oxygenated and deoxygenated bloods not get mixed up inside the heart?
A. There are blood vessels in the heart
B. There are valves in the heart
C. There are separate chambers in the heart
D. The deoxygenated blood is left in the lungs
A. There are blood vessels in the heart
B. There are valves in the heart
C. There are separate chambers in the heart
D. The deoxygenated blood is left in the lungs
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answer:C
explanation:Their is no mixing of oxygenated and deoxygeneted blood normally because humans have four chambered heart and this is separated by septum which prevents the mixing of oxygenated and deoxygeneted blood so as to ensure efficience supply of energy.