AQA GCSE Biology · 8461
Specification 4.2.2.4 · Paper 1
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GCSE Biology · key term
A flap-like structure that opens to let blood move forwards and closes to prevent it flowing backwards.
Used by AQA
Specification 4.2.2.4 · Paper 1
Do not confuse a replacement heart valve with a whole-heart transplant. A valve replacement treats a faulty valve; a transplant may be used when the heart is failing.
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