FOUNDATIONAL TERM
Lumen
管腔
The inside space of a tubular structure, such as the intestinal space through which food passes.
Study this concept in context
09 · The Body as a Whole: Where Organs Are and How They Connect
Understanding a body diagram means knowing where organs are, what lies beside them, and how substances and signals move between them. We establish a spatial map, then follow one breath to connect the structures into a working whole.
Sources
Definitions come from the published lessons. Read the linked lesson for mechanisms, conditions and examples.