scheme pharyngeal nephridial system with blood glands pheretima earthworm for biology lesson |
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| navigate by keyword : zoology worm white vector undefined terrestris system structure science scheme schematic schema protonephridia praepinguis pheretima pharynx 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 pharyngeal nephridial system with blood glands of Pheretima earthworm for biology lesson. Diagram of excretory system of earthworm |
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