scheme tuft pharyngeal nephridia with blood glands pheretima earthworm |
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| navigate by keyword : zoology worm white vector undefined tuft terrestris system structure science scheme schematic schema protonephridia praepinguis pheretima pharyngeal nephrostome nephridium nephridial nephridia morphology metanephridia material lumbricus lesson isolated internal glands excretory element educational earthworm diagram detail darnleiensis common blood biology background animal anatomy |
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| Scheme of tuft of pharyngeal nephridia with blood glands of Pheretima earthworm for biology lesson. Diagram of excretory system of earthworm |
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