Definition: a delimited part or section of an organ or other structure that lies closest to the midline compared with the other similar parts or sections.
See: medial bronchopulmonary segment S V, medial basal bronchopulmonary segment S VII, (left) medial hepatic segment [IV], (right) posterior medial hepatic segment [VIII], (right) anterior medial hepatic segment [V]
Synonym(s): segmentum medialeTA
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Examples: glitazone, GI cocktail, etc.