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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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type of cells that make up muscle layers in the pharynx. |
pharyngeal muscle cell
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WBbt:0005451
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Epidermal layer. |
hypodermis
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epidermis |
WBbt:0005733
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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
|
esophagus |
WBbt:0003681
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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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Major cell type of nervous tissue, specialized for transmission of information in the form of patterns of impulses. |
neuron
|
neurone |
WBbt:0003679
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a group of hypodermal cells that lie along the apical midline of the hypodermis, at the extreme left and right sides between nose and tail |
seam cell
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lateral hypodermis |
WBbt:0005753
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These cells include: B, F, Y, U, K' and K. All rectal epithelial cells contain secretory membrane stacks along this region facing the lumenal cuticle and produce some portion of the cuticular lining of the rectum. These are interfacial cells that connect the alimentary system to the main body syncytium. |
rectal epithelial cell
|
rectal epithelium |
WBbt:0008182
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sheath cell of amphid sensillum. |
amphid sheath cell
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WBbt:0006754
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