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Home › Biology › Human Circulatory System

Human Circulatory System — Biology Questions & Practice

Practise 12 Human Circulatory System questions from Biology for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Human Circulatory System — with answers

Try each question first, then open the answer. Explanations are included.

1. How many chambers does the human heart have?

  1. ASix
  2. BThree
  3. CTwo
  4. DFour (two atria and two ventricles)
Show answer

Answer: D

The correct answer is '4'.

2. Which chamber of the heart pumps oxygenated blood to the entire body?

  1. ALeft atrium
  2. BLeft ventricle
  3. CRight atrium
  4. DRight ventricle
Show answer

Answer: B

The left ventricle, with the thickest muscular wall, pumps oxygenated blood into the aorta to supply the entire body.

3. Which chamber of the heart receives deoxygenated blood from the body?

  1. ALeft ventricle
  2. BRight ventricle
  3. CLeft atrium
  4. DRight atrium
Show answer

Answer: D

The right atrium receives deoxygenated blood returning from the body via the superior and inferior vena cava.

4. What is the largest artery in the human body, carrying oxygenated blood from the left ventricle?

  1. AVena cava
  2. BAorta
  3. CPulmonary artery
  4. DCarotid artery
Show answer

Answer: B

The aorta is the largest artery in the body, carrying oxygenated blood from the left ventricle to systemic circulation.

5. What type of blood vessel carries blood away from the heart?

  1. AVein
  2. BArtery
  3. CCapillary
  4. DVenule
Show answer

Answer: B

Arteries carry blood away from the heart, typically carrying oxygenated blood (except the pulmonary artery).

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