Standard Science Primary 5 Systems

The arrows in the diagram show the flow of blood in the human body. Which arrow represents blood rich in oxygen flowing from the lungs to the heart?

A Arrow W
B Arrow X
C Arrow Z
D Arrow Y
Show Worked Solution

Worked Solution

Step 1: Blood picks up oxygen in the lungs. Step 2: It must return to the heart to be pumped to the rest of the body. Step 3: Arrow X shows this specific pathway from Lungs back to Heart.

Correct answer: Arrow X

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