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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
|
|
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
|
|
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
|
|
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
|
|
WBbt:0005735
|
|
neuron with its cell body situated in the head, excluding the pharynx. |
head neuron
|
|
WBbt:0006751
|
|
a single, H-shaped cell which lies just above the anus and connects the roof of the anal canal to the dorsal bodywall; its contractions act to increase the size of the anal opening by lifting the roof of the rectum and hence facilitate expulsion of intestinal contents. |
anal depressor muscle
|
dilator muscle |
WBbt:0004292
|
|
neuron with its cell body situated in the tail, posterior to rectum. |
tail neuron
|
|
WBbt:0006759
|
|
a saddle-shaped muscle cell that encircles the intestinal-rectal valve |
anal sphincter muscle
|
lineage name: ABprpppppap |
WBbt:0005798
|
|
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
|
lateral hypodermis |
WBbt:0005753
|
|
the most extensive region of neuropil in the animal, consists of a large toroidal bundle of processes. |
nerve ring
|
circumpharyngeal nerve ring |
WBbt:0006749
|
|
Secretory gland cell of the pharynx |
Pharyngeal gland cell
|
|
WBbt:0005788
|
|
posterior region, from rectum to the end |
tail
|
|
WBbt:0005741
|
|
membranous cell attaches the uterus to the lateral epidermis (seam) and forms a thin laminar process dorsal to the vulva. formed by fusion of eight pi cell progeny and AC. |
uterine seam cell
|
utse |
WBbt:0006789
|
|
|
reproductive system
|
|
WBbt:0005747
|
|
left intestinal muscle cell, attach to intestine and body wall anterior to anus |
mu_int_L
|
lineage name: ABplpppppaa |
WBbt:0003833
|
|
right intestinal muscle cell, attach to intestine and body wall anterior to anus |
mu_int_R
|
lineage name: MSppaapp |
WBbt:0003822
|
|
sensillum of inner or outer labial. |
labial sensillum
|
|
WBbt:0005107
|
