Step #1 - Flagellum beats, creating negative pressure in the excretory canal, Step #2 - Interstital fluid drawn into canal, Step #3 - Fluid pushed toward excretory pore, "good" substances reabsorbed by active transport, Step #4 - Waste pushed out of excretory canal,

Protonephridia (flame cells)

Rangliste

Visuel stil

Indstillinger

Skift skabelon

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