Standard Science Primary 5 Systems

Which of the following is the main function of the heart in the circulatory system?

A To digest nutrients for the cells.
B To produce new blood cells.
C To pump blood to all parts of the body.
D To exchange gases with the lungs.
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Worked Solution

Step 1: Define the heart as a muscular organ. Step 2: Its rhythmic contractions push blood through vessels. Step 3: This ensures oxygen and nutrients reach all cells.

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

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