Standard Science Primary 5 Systems

Which of the following components of the human circulatory system is responsible for pumping blood to all parts of the body?

A Gills
B Lungs
C Blood vessels
D Heart
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Worked Solution

Step 1: Identify the pump of the circulatory system. Step [2-9]: The heart is a muscular organ that contracts to push blood through the vessels. Step [2-9]: It circulates oxygenated and deoxygenated blood to the lungs and the rest of the body.

Correct answer: Heart

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