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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
|
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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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
|
|
Epidermal layer. |
hypodermis
|
epidermis |
WBbt:0005733
|
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neuron with its cell body situated in the head, excluding the pharynx. |
head neuron
|
|
WBbt:0006751
|
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neuron with its cell body situated in the tail, posterior to rectum. |
tail neuron
|
|
WBbt:0006759
|
|
posterior region, from rectum to the end |
tail
|
|
WBbt:0005741
|
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anterior-most body region containing the pharynx. |
head
|
|
WBbt:0005739
|
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a type of pharyngeal cell that connects basement membrane to the apices of triangle-shaped pharyngeal lumen. |
marginal cell
|
|
WBbt:0003673
|
