Terminology Service for NFDI4Health
lesser sac
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http://purl.obolibrary.org/obo/UBERON_0001341
The lesser sac, also known as the omental bursa, is the cavity in the abdomen that is formed by the lesser and greater omentum. Usually found in mammals, it is connected with the greater sac via the epiploic foramen (also known as the Foramen of Winslow). [WP,unvetted]. [ http://en.wikipedia.org/wiki/Lesser_sac ]
Term info
Label
lesser sac
Synonyms
- bursa omentalis
- omental bursa
Subsets
uberon_slim
depicted by
http://upload.wikimedia.org/wikipedia/commons/c/c5/Peritoneum.svg
development notes
The lesser sac is embryologically formed from an infolding of the greater omentum. The open end of the infolding, known as the epiploic foramen, is usually proximal to the stomach
external definition
The lesser sac of the peritoneum. Part of the peritoneal cavity behind the liver, lesser omentum and stomach. It lies across the transverse mesocolon and extends into the greater omentum. [Dorian_AF, Elsevier's_encyclopaedic_dictionary_of_medicine, Part_B:_Anatomy_(1988)_Amsterdam_etc.:_Elsevier][VHOG]
external ontology notes
classified as a cavity in EHDAA2, so this truly corresponds to FMA 'Cavity of lesser sac' - we hedge for now; todo - treat same as greater sac
has obo namespace
uberon
id
UBERON:0001341
taxon notes
In mammals, it is not uncommon for the lesser sac to contain considerable amounts of fat. In human anatomy, the wall of the stomach, pancreas and splenic artery are a part of the wall of the lesser sac