Standard Science Primary 5 Systems

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

A To pump blood to all parts of the body.
B To exchange oxygen and carbon dioxide.
C To produce new red blood cells.
D To filter waste from the blood.
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Worked Solution

Step 1: The circulatory system is a transport system. Step [2-9]: It requires a pump to move the transport medium (blood). Step [2-9]: The heart is the muscular pump that creates the pressure needed for blood flow.

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

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