Anatomy & Physiology Circulatory #2

Question

Which is the correct sequence for blood that moves from the heart, to the body, and then back to the heart during systemic circulation?

Answers

  1. Aorta, arteries, arterioles, capillaries, venules, veins, vena cava vein of the heart
    • Rationale:

      Systemic circulation begins as soon as blood is oxygenated within the lungs. Once the blood travels back to the heart the route for which blood is pumped from the heart to the rest of the body is as follows: aorta, arteries, arterioles, capillaries, venules, veins, vena cava vein of the heart.

  2. Arteries, aorta, arterioles, capillaries, venules, veins, vena cava vein of the heart
    • Rationale:

      This is not the correct sequence that blood travels during systemic circulation throughout the body. The sequence begins in the aorta, not the arteries.

  3. Arterioles, aorta, arteries, capillaries, venules, veins, vena cava vein of the heart
    • Rationale:

      This is not the correct sequence that blood travels during systemic circulation throughout the body. The sequence begins in the aorta, not the arterioles.

  4. Aorta, arteries, arterioles, venules, capillaries, veins, vena cava vein of the heart
    • Rationale:

      This is not the correct sequence that blood travels during systemic circulation throughout the body. Once the blood leaves the arterioles it travels to the capillaries and not the venules.

Overview

The circulatory system within the human body provides the cells with freshly oxygenated blood from the heart in addition to removing waste products from these same cells.

Explanation

Learning Outcomes

Systemic circulation is defined as the distribution of oxygenated blood that is pumped from the heart and distributed to the body. Systemic circulation begins once pulmonary circulation ends. The route that is taken by blood that is pumped from the heart, to the body, and then back to the heart is as follows: aorta, arteries, capillaries, venules, veins, vena cava (e.g., inferior and superior) of the heart.

Test Taking Tip

Consider the pathway for oxygen distribution by the circulatory system to answer this question correctly.

Video Rationale