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The heart and blood vessels

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Why is the left side of the heart thicker than the right?

The left side is thicker as blood leaving the left ventricle travels around the body, which requires more strength to pump around

What is the purpose of valves in the heart and veins?

to prevent the back flow of blood

Define vasoconstriction

constriction of blood vessels, increasing blood pressure

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Summary of the heart and gaseous exchange GCSE PE

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This document includes information about the heart, the pathway of blood in the heart and information regarding the three different types of blood vessels. It also explains gaseous exchange very briefly. This document can be used to review the small topic as a summary.

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