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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 large process bundle that runs along the vental mid-line extending from the ventral region of the nerve ring. |
ventral nerve cord
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ventral cord |
WBbt:0005829
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type of cells that make up muscle layers in the pharynx. |
pharyngeal muscle cell
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WBbt:0005451
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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
|
body muscle |
WBbt:0005813
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muscle associated with hermaphrodite vulva. |
vulval muscle
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WBbt:0005821
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the most extensive region of neuropil in the animal, consists of a large toroidal bundle of processes. |
nerve ring
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circumpharyngeal nerve ring |
WBbt:0006749
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ganglion anterior to the anus. |
preanal ganglion
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WBbt:0005448
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muscle that controls hermaphrodite rectal opening. |
rectal muscle
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anal muscle |
WBbt:0005803
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any of 20 large epithelial cells which form a tube and are mostly situated as bilaterally symmetric pairs around the tubular lumen. Each of these cell pairs forms an intestinal ring ( II-IX int rings). The most anterior intestinal ring (int ring I), however, is made of four cells. Intestinal cells contain large nuclei with large nucleoli and numerous autofluorescent granules in their cytoplasm. |
intestinal cell
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WBbt:0005792
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