Standard Science Primary 5 Systems

What is the main function of the heart in the circulatory system?

A To exchange gases in the body
B To pump blood to all parts of the body
C To produce red blood cells
D To filter waste from the blood
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Worked Solution

Step 1: The heart is a muscular organ. Step [2-9]: Its continuous contractions create the pressure needed to move blood. Step [2-9]: It pumps blood to the lungs (for oxygen) and the rest of the body.

Correct answer: To pump blood to all parts of the body

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