Standard Science Primary 5 Systems

What is the primary function of the heart in the human circulatory system?

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

Step 1: The heart is a muscular organ. Step 2: Its rhythmic contractions act as a pump. Step 3: This pressure moves blood through the blood vessels to deliver oxygen and nutrients.

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

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