Multiple choice

The left side of the heart carries _____ blood.

  1. oxygenated

  2. de-oxygenated

  3. carbonated

  4. hydrogenated
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The left side of the heart receives oxygenated blood from the lungs via the pulmonary veins and pumps it through the aorta to supply the entire body. This is why the left ventricle has the thickest muscular wall; it must generate enough pressure to push blood throughout the systemic circulation.

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