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A-Level Biology OCR A

Single Describe Structure Capillaries Layer Endothelial Cells Gaps

Capillaries are characterized by a single layer of endothelial cells with gaps and a very small lumen, allowing erythrocytes to pass in single file.

Capillaries are characterized by a single layer of endothelial cells with gaps and a very small lumen, allowing erythrocytes to pass in single file.

Front Describe the structure of capillaries.
Back Capillaries:
  • Single layer of endothelial cells with gaps in between
  • Lumen is very small - just enough for erythrocytes to travel in single file line

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