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
|
an accordion-like tube that contains sperm and is the site of oocyte fertilization. |
spermatheca
|
|
WBbt:0005319
|
a cellular object that consists of subcellular components, expresses genes or functions. |
Cell
|
Cell type |
WBbt:0004017
|
gland cell of the secretory-excretory system, sends processes to ring, opens into excretory duct. |
excretory gland cell
|
exc gl |
WBbt:0005776
|
Major cell type of nervous tissue, specialized for transmission of information in the form of patterns of impulses. |
neuron
|
neurone |
WBbt:0003679
|
A fluid-filled space enclosed on the outside by the basal laminae of the bodywall tissues, principally those of the bodywall muscles and the hypodermis. Within this space the digestive tract and reproductive tract lie separately, each enclosed by its own basal lamina. Intercellular signals, nutrients and waste products can travel between all tissues bordering this space. |
pseudocoelom
|
body cavity |
WBbt:0005745
|
hypodermis making up the tail. |
tail hypodermis
|
|
WBbt:0006978
|