Biology A-Level
Semilunar valves
What Semilunar valves means in Biology A-Level, as defined for AQA.
Definition of Semilunar valves
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Reference: AQA
These sit at the base of the pulmonary artery and aorta, preventing backflow into the ventricles.
Topics that use Semilunar valves
- Mass transport in animals (AQA A-Level)
Related terms
- affinity
- affinity for oxygen
- atrial systole
- Atrioventricular valves
- biconcave disc
- Biological drawing conventions
- Bohr effect
- Causation
Using Semilunar valves in the exam
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