Standard Science Primary 5 Systems

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

A To store oxygen
B To pump blood to all parts of the body
C To digest food
D To exchange gases
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Worked Solution

Step 1: The heart is a muscular organ. Step 2: Its primary job is to act as a pump. Step 3: It ensures blood reaches the lungs and the rest of the body.

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

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