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aksik [14]
4 years ago
10

Identify the correct path for OXYGEN-POOR blood

Health
1 answer:
Oksanka [162]4 years ago
8 0

Answer:

The correct pathway for oxygen-poor blood is right atrium → right ventricle → pulmonary artery → lungs (first option).

Explanation:

Unoxygenated or oxygen-poor blood is that which comes from tissues that have exchanged O₂ for CO₂. The venous return is in charge of taking that blood to the heart and then to the lungs.

  1. Oxygen-poor blood reaches the <u>right atrium</u> from the vena cava.
  2. From the atrium the blood passes to the <u>right ventricle</u> through the tricuspid valve.
  3. The <u>right ventricle pumps the blood to the lungs</u> through the pulmonary arteries, the only arteries that carry venous blood.

Once in the lungs, the blood exchanges CO₂ for O₂, returning to the heart through the pulmonary veins.

The other options are not correct because:

  • <em><u>Left atrium, left ventricle, aorta, body</u></em><em> corresponds to the flow of oxygenated blood that comes from the lungs and is pumped to the entire body.</em>
  • <em><u>Left atrium, right atrium, left ventricle, right ventricle</u></em><em> not correspond to the order in which blood flows through the heart.</em>
  • <em><u>Right ventricle, right atrium, pulmonary veins, lungs​</u></em><em> not correspond to the flow of oxygen-poor blood.</em>
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