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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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neuron with its cell body situated in the head, excluding the pharynx. |
head neuron
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WBbt:0006751
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body wall muscle in the head, including first eight cells of each muscle quadrants which are innervated by nerve ring neurons. |
head muscle
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head body wall muscle |
WBbt:0006761
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Neuron class of eleven motoneurons, distributed along the ventral cord, which innervate ventral body muscles. |
VB neuron
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WBbt:0005336
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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 thirteen motoneurons, with cell bodies in the ventral cord, which innervate ventral muscles. Each cell has an anteriorly directed process emanating from its cell body. |
VD neuron
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WBbt:0005303
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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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neuron with its cell body situated in the tail, posterior to rectum. |
tail neuron
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WBbt:0006759
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five pairs of thin gonadal sheath cells form a single layer covering the germ line component of each arm, each pair occupying a stereotyped position along the gonad proximal-distal axis. |
gonadal sheath cell
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WBbt:0005828
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