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A group of six equivalent cells forms a tightly constructed `valve` that links the posterior bulb of the pharynx to the anterior four cells of the intestine. These six cells comprise a small epithelial channel with a cuticular lining in continuity with the pharyngeal cuticle and link the lumen of the pharynx to the large lumen of the anterior intestine. |
pharyngeal-intestinal valve
|
cardia |
WBbt:0005767
|
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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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a saddle-shaped muscle cell that encircles the intestinal-rectal valve |
anal sphincter muscle
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lineage name: ABprpppppap |
WBbt:0005798
|
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Major cell type of nervous tissue, specialized for transmission of information in the form of patterns of impulses. |
neuron
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neurone |
WBbt:0003679
|
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intestinal muscle cell, attach to intestine and body wall anterior to anus |
intestinal muscle
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stomato-intestinal muscle |
WBbt:0005796
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