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
|
A group of six equivalent cells forms a tightly constructed `valve` that links the posterior bulb of the pharynx to the anterior four cells of the intestine. These six cells comprise a small epithelial channel with a cuticular lining in continuity with the pharyngeal cuticle and link the lumen of the pharynx to the large lumen of the anterior intestine. |
pharyngeal-intestinal valve
|
cardia |
WBbt:0005767
|
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
|
muscle associated with hermaphrodite vulva. |
vulval muscle
|
|
WBbt:0005821
|
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
|
neuron with its cell body situated in the head, excluding the pharynx. |
head neuron
|
|
WBbt:0006751
|
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
|
neuron of the amphid sensillum |
amphid neuron
|
amphid sensory neuron |
WBbt:0005394
|
|
reproductive system
|
|
WBbt:0005747
|