Question

How does oxygenated and deoxygenated blood not mixed together in heart?

Answer 1

Answer:

in heart the right and left halves of the heart are separated by a thick wall which prevents the oxygenated blood from mixing with the deoxygenated blood

Answer 2

The oxygenated and deoxygenated blood  is not mixed in the heart because the heart is divided into four chambers:

• Left Ventricle
• Left Auricle (Atrium)
• Right Ventricle
• Right Auricle (Atrium)

The four chambers are divided into two parts. The right part of the heart consisting of Right Ventricle and Right Auricle (Atrium) and the left part, consisting of Left Ventricle and Left Auricle (Atrium).

The blood that is without oxygen transits back into the heart from other parts of the body enters into the right side of the heart and passes into the lungs. The blood oxygenated by the lungs comes into the left side of the heart and is drawn back out into the body.