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Mesentery has been known for thousands of years, however it was unclear whether mesentery is a single organ or there are several mesenteries. [ 20 ] [ better source needed ] The classical anatomical description of the mesocolon is credited to British surgeon Sir Frederick Treves in 1885, [ 21 ] although a description of the membrane as a single ...
The mesenteries deposit calcium carbonate which forms a stony ridge, the septum, between each pair of mesenteries and builds the corallite, the cup in which the polyp sits. [6] Sea anemones, order Actiniaria, have at least eight complete mesenteries and a variable number of incomplete ones near the base. The functional significance of the ...
The mesothelium is a membrane composed of simple squamous epithelial cells of mesodermal origin, [2] which forms the lining of several body cavities: the pleura (pleural cavity around the lungs), peritoneum (abdominopelvic cavity including the mesentery, omenta, falciform ligament and the perimetrium) and pericardium (around the heart).
Mesenteries are folds of peritoneum that are attached to the walls of the abdomen and enclose viscera completely. They are supplied with plentiful amounts of blood . The three most important mesenteries are mesentery for the small intestine , the transverse mesocolon , which attaches the back portion of the colon to the abdominal wall, and the ...
Peritoneal folds are omentums, mesenteries and ligaments; they connect organs to each other or to the abdominal wall. [4] There are two main regions of the peritoneal cavity, connected by the omental foramen. The greater sac, represented in red in the diagrams above. The lesser sac, represented in blue. The lesser sac is divided into two "omenta":
In order to differentiate the use of the word mesenchyme in vertebrate embryology (that is, undifferentiated tissue found in embryonic true [ento-]mesoderm from which are derived all connective tissues, blood vessels, blood cells, the lymphatic system, and the heart) and the use in invertebrate zoology (a more-or-less solid but loosely organized tissue consisting of a gel matrix [the mesoglea ...
The main function of the ENS is to control the secretory activity of the gastrointestinal glands and peristalsis of the gastrointestinal wall. [1] A large number of organs derived from the developing foregut also receive input from the vagus nerve , which also works in tandem with the ENS to control gastrointestinal function.
The gastrovascular cavity is the primary organ of digestion and circulation in two major animal phyla: the Coelenterates or cnidarians (including jellyfish and corals) and Platyhelminthes (flatworms).