How are the shapes of red blood cells and the shapes of nerve cells related to their functions? Thank you!

This biconcave shape allows the cells to flow smoothly through the narrowest blood vessels. Gas exchange with tissues occurs in capillaries, tiny blood vessels that are only as wide as one cell. Many RBCs are wider than capillaries, but their shape provides the needed flexibility to squeeze through.

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frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.