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A chain of very large cuboidal cells forming a wide central lumen in which food arrives from the posterior pharynx, is digested, and from which waste products proceed to the rectum. Intestinal rings form in groups of two and four cells surrounding the common lumen; thus the epithelium is only one cell deep at any point, with neighboring cells firmly secured to their neighbors by apical adherens junctions. These cells have very large nuclei and many large vacuoles, yolk granules, and other inclusions; the latter increase in number and electron density as the animal ages. |
intestine
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gut |
WBbt:0005772
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a single, H-shaped cell which lies just above the anus and connects the roof of the anal canal to the dorsal bodywall; its contractions act to increase the size of the anal opening by lifting the roof of the rectum and hence facilitate expulsion of intestinal contents. |
anal depressor muscle
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dilator muscle |
WBbt:0004292
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Neuron class of twelve motoneurons, distributed along the ventral cord, which innervate ventral body muscles. |
VA neuron
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WBbt:0005339
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Neuron class of nine ventral cord motor neuron, innervates dorsal muscle. |
DA neuron
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WBbt:0005278
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Neuron class of eleven motoneurons, with cell bodies in the ventral cord, which innervate dorsal muscles. |
AS neuron
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WBbt:0005334
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H-shaped cell associated with the excretory system, largest cell in C. elegans. |
excretory cell
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excretory canal cell |
WBbt:0005812
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neuron that senses soluable chemicals |
chemosensory neuron
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WBbt:0005837
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