Biology A-Level
lumen diameter
What lumen diameter means in Biology A-Level, as defined for AQA.
Definition of lumen diameter
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Reference: AQA
A narrow lumen relative to wall thickness keeps pressure high, whereas a vein has a wide lumen.
Topics that use lumen diameter
- Mass transport in animals (AQA A-Level)
Related terms
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- Bohr effect
- Causation
Using lumen diameter in the exam
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