Science
During which of the following stages of the circulation of blood in a normal human being, the oxygenated blood is pumped to all parts of the body?
options
- Contraction of the left atrium
- Contraction of left ventricle
- Relaxation of the right atrium
- Relaxation of the right ventricle
Circulatory System
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Answer
Contraction of left ventricle
Reason —
- Oxygenated blood enters the left atrium from the lungs, then moves to the left ventricle.
- When the left ventricle contracts, it pumps this blood into the aorta, sending it to all parts of the body.
- The right side (right atrium/ventricle) deals with deoxygenated blood and sends it to the lungs, not the body.
Therefore, it is specifically during the contraction of the left ventricle that oxygenated blood is distributed to all parts of the body.
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