Key term for Edexcel GCSE Biology, used in The Circulatory System.
The central hollow channel inside a blood vessel through which the blood flows.
Lumen appears in Edexcel GCSE Biology revision content for Exchange and Transport in Animals, especially The Circulatory System and Blood Vessels.
Exchange and Transport in Animals
Blood Vessels
Animal Coordination, Control and Homeostasis
Mechanisms of Thermoregulation
Plant Structures and Functions
Xylem and Phloem
Health, Disease and Medicines
Treatments for Cardiovascular Disease
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Plant Structures and Functions
Plant Transport • Xylem and Phloem
