Science MCQs
Practice multiple choice questions with instant feedback. Select an option to see if you're correct.
What is the main function of the human circulatory system?
Which organ acts as the pumping organ in the circulatory system?
How many chambers does the human heart have?
The upper chambers of the heart are called?
Which blood vessels carry blood away from the heart?
The smallest blood vessels where exchange occurs are called?
Which blood vessels carry blood back to the heart?
Which valve prevents the backflow of blood in the heart?
Which chamber pumps blood to the lungs?
Which chamber receives oxygenated blood from the lungs?
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Regular practice with MCQs can improve your test-taking speed and accuracy by up to 40%.
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