Anatomy & Physiology Cardiac #4

Question

Which structure receives oxygen-poor blood from the lower body?

Answers

  1. Aorta
    • Rationale:

      The aorta is the main artery of the body. It supplies oxygenated blood to the circulatory system to the heart.

  2. Pulmonary artery
    • Rationale:

      The pulmonary artery carries oxygen-poor blood from the right ventricle to the lungs for oxygenation to occur.

  3. Inferior vena cava
    • Rationale:

      The vena cava is a large vein that carries deoxygenated blood from the body to the heart. The inferior vena cava carries oxygen-poor blood from the lower body to the heart.

  4. Superior vena cava
    • Rationale:

      The superior vena cava, a large vein, supplies blood from the upper body to the heart.

Overview

There are two circulatory pathways that move blood to, through, and from the cardiac muscle.

Explanation

Learning Outcomes

The right side of the heart has the pulmonary circulation pathway which moves blood to the lungs for reoxygenation. The left side of the heart has the systemic circulation which moves oxygenated blood to the rest of the body. The inferior vena cava is the structure that receives oxygen-poor blood from the lower body.

Test Taking Tip

Consider the structure and function of each choice to determine the correct answer for this question.

Video Rationale