from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The portion of the embryonic mesentery that is attached to the early stomach.
- n. The region of the abdomen surrounding the navel.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The part of the embryonic mesentery that includes the stomach
from the GNU version of the Collaborative International Dictionary of English
- n. The umbilical region.
- n. The mesogaster.
from The Century Dictionary and Cyclopedia
- n. In human anat, the umbilical region of the abdomen, between the epigastrium above and the hypogastrium or epipubic region below. See cut under abdomen.
- n. In anatomy and zoology, the mesentery of the stomach; the fold of peritoneum which holds the stomach in place.
Sorry, no etymologies found.
With the change in the position of the stomach the dorsal mesogastrium is drawn downward and to the left, and the right side of the pancreas is directed backward and the left forward (Fig. 1103).
At first the pancreas is directed upward and backward between the two layers of the dorsal mesogastrium, which give to it a complete peritoneal investment, and its surfaces look to the right and left.
The former arises as a diverticulum from the dorsal aspect of the duodenum a short distance above the hepatic diverticulum, and, growing upward and backward into the dorsal mesogastrium, forms a part of the head and uncinate process and the whole of the body and tail of the pancreas.
By the growth of the liver the ventral mesogastrium is divided into two parts, of which the anterior forms the falciform and coronary ligaments, and the posterior the lesser omentum.
The spleen appears about the fifth week as a localized thickening of the mesoderm in the dorsal mesogastrium above the tail of the pancreas.
As the liver undergoes enlargement, both it and the ventral mesogastrium of the fore-gut are gradually differentiated from the septum transversum; and from the under surface of the latter the liver projects downward into the abdominal cavity.
The part of the dorsal mesogastrium which intervened between the spleen and the greater curvature of the stomach forms the gastrosplenic ligament.
Schematic and enlarged cross-section through the body of a human embryo in the region of the mesogastrium.
The lesser omentum is formed, as indicated above, by a thinning of the mesoderm or ventral mesogastrium, which attaches the stomach and duodenum to the anterior abdominal wall.
Its dorsal part or greater curvature, to which the dorsal mesogastrium is attached, grows much more rapidly than its ventral part or lesser curvature to which the ventral mesogastrium is fixed.