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
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cardia |
WBbt:0005767
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Longitudinal bands of muscle cells surrounding animal body, with one band running in each quadrant of the body, regulated contraction and relaxation of these muscles cause locomotion. |
body wall musculature
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body muscle |
WBbt:0005813
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Complement of nervous tissue (neurones, nerves, receptors and support cells) serving to detect, relay and coordinate information about an animal`s internal and external environments and to initiate and integrate its effector responses and activities. |
nervous system
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WBbt:0005735
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the feeding organ, a neuro-muscular pump in the head of the animal, used to ingest food, bacteria suspended in liquid, filter them out, grind them up and transport posteriorly into the instestine. |
pharynx
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esophagus |
WBbt:0003681
|
neuron with its cell body situated in the head, excluding the pharynx. |
head neuron
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WBbt:0006751
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The organ in which the eggs are developed and protected until laid. |
uterus
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WBbt:0006760
|
posterior region, from rectum to the end |
tail
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WBbt:0005741
|
|
reproductive system
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WBbt:0005747
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