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AExcFIG 1: The C. elegans excretory apparatus.
A. Schematic showing the full length of the H-shaped excretory cell as seen from lateral side. In an adult animal, the excretory canals reach from the nose of the nematode to the tail region. (Inset) Head portion from the ventral side.)
B. The excretory system consists of the fused pair of gland cells (blue), the excretory (canal) cell (red), the duct cell (brown) and the pore cell (yellow). Somata of all of these cells are located in the head region. The excretory cell is the largest cell in the nematode and is located juxtaposed to the terminal bulb of the pharynx on the ventral side.
C. Schematic rendering of a single canal located underneath the basal lamina of the hypodermis and in contact with the pseudocoelom on its basal surface. The canal makes extensive gap junctions to the surrounding hypodermis (thick black lines around the basal surface). The apical surface is surrounded by the terminal web (light gray line) on the cytoplasmic side and contains mucus (yellow line within lumen). Approximately 20 microtubules dot the cytoplasm. (See also Hermaphrodite Excretory System.)
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