Capillaries are adapted for diffusion with slow blood flow, numerous branches for a large surface area, a one-cell thick endothelium, and a narrow lumen that presses red blood cells against the walls for a shorter diffusion pathway.
- slow blood flow - more time for diffusion - numerous and highly branched - larger surface area for diffusion - one cell thick endothelium - narrow diameter so permeate tissues - narrow lumen, RBCs pressed against walls - shorter diffusion pathway
| Front | How are capillaries adapted for diffusion? (5) |
|---|---|
| Back | - slow blood flow - more time for diffusion - numerous and highly branched - larger surface area for diffusion - one cell thick endothelium - narrow diameter so permeate tissues - narrow lumen, RBCs pressed against walls - shorter diffusion pathway |
Tags: blood, gas_exchange
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