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Circulatory system Knowledge-Based Practice

Biology · Human Body & Physiology · Biology · Circulation & Respiration

5 Biology practice questions on Circulatory system. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    Which blood vessels offer the greatest resistance to blood flow and are responsible for the steepest drop in systemic blood pressure?

    • A) Elastic arteries
    • B) Arterioles
    • C) Capillaries
    • D) Large veins
  2. 2.

    Which blood vessel carries deoxygenated, nutrient-rich blood directly from the digestive tract to the liver?

    • A) Hepatic artery
    • B) Hepatic vein
    • C) Hepatic portal vein
    • D) Inferior vena cava
  3. 3.

    Which heart valve prevents the backflow of blood from the right ventricle into the right atrium during ventricular systole?

    • A) Bicuspid (mitral) valve
    • B) Aortic semilunar valve
    • C) Pulmonary semilunar valve
    • D) Tricuspid valve
  4. 4.

    Which specialized structure within the human heart acts as the primary pacemaker by spontaneously initiating the electrical impulses that establish the cardiac rhythm?

    • A) Atrioventricular node
    • B) Sinoatrial node
    • C) Bundle of His
    • D) Purkinje fibers
  5. 5.

    Which blood vessel transports oxygenated blood from the lungs directly into the left atrium of the human heart?

    • A) Superior vena cava
    • B) Pulmonary vein
    • C) Pulmonary artery
    • D) Inferior vena cava

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