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9. Which of the following pathways best represent the expected flow of blood from human heart...

9. Which of the following pathways best represent the expected flow of blood from human heart to an organ?

• Blood pumped from the heart first enters arteries that then narrow to form veins that deliver blood to the organ.

• Blood pumped from the heart first enters arterioles that then merge to form arteries that deliver blood to the organ

• Blood pumped from the heart first enters veins that then narrow to form venules that deliver blood to arteries of the organ.

• Blood pumped from the heart first enters arteries that then narrow to form arterioles from that deliver blood to capillaries of the organ.

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Answer #1

9. Answer- Blood pumped from the heart first enters arteries that then narrow to form arterioles from that deliver blood to capillaries of the organ.

Explanation- The pathway of flow of blood from human heart to organ can be simply represented. As oxygenated blood pumped out from left ventricle, it enters into arteries. Arteries become branched into arterioles. Arterioles again branched and form capillaries. So, from arterioles blood flows into capillaries of organ.

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