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Atrioventricular valve — OCR GCSE Combined Science A Definition

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Combined Science
Key terms
Atrioventricular valve

GCSE Combined Science · key term

Atrioventricular valve

Definition

A valve between an atrium and a ventricle that prevents blood flowing back into the atrium when the ventricle contracts.

Used by OCR

How each exam board covers it

OCR GCSE Combined Science A · J250

Specification B2.2d · Biology Paper 1

The tricuspid and bicuspid valves are atrioventricular valves. Tough tendons anchor their flaps, preventing them from turning inside out when the ventricles contract.
Revise: Heart and Blood Vessel Adaptations

OCR Combined Science A past papers

Related key terms

Artery
Atrium
Capillary
Cardiac muscle
Coronary artery

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Semilunar valve