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Question

Difficulty: MediumHuman Anatomy and Body Systems

When the left ventricle of the human heart contracts, it propels oxygen-rich blood under high pressure directly into which major blood vessel to initiate systemic circulation throughout the body?

  1. A
    Superior vena cava
  2. B
    Inferior vena cava
  3. AortaAnswer
  4. D
    Hepatic portal vein

Answer

The aorta is the major artery that receives oxygenated blood from the left ventricle to supply the entire systemic circuit.
During ventricular systole, the left ventricle generates high pressure to force oxygen-rich blood through the aortic valve into the aorta, which serves as the main trunk of the systemic arterial system.

Step-by-Step Solution

1
Identify the chamber of the heart specified and its role in circulation.
The left ventricle pumps newly oxygenated blood out of the heart into the high-pressure systemic circuit.
The left side of the heart is dedicated to systemic circulation, moving oxygen-rich blood to peripheral tissues.
2
Determine the anatomical vessel directly connected to the left ventricle.
The aorta connects directly to the left ventricle across the aortic semilunar valve.
The aorta is the primary conduit that branches into systemic arteries distributing oxygenated blood throughout the body.

Key Concept

Cardiovascular systemic arterial outflow and ventricular ejection
Estimated Time:45s
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Topics

Human Anatomy and Body Systems

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