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DictionarySeeabdominalabdominal regions
abdominal regions[ab′däm·ə·nəl ′rē·jənz] (anatomy) Nine theoretical areas delineated on the abdomen by two horizontal and two parasagittal lines: above, the right hypochondriac, epigastric, and left hypochondriac; in the middle, the right lateral, umbilical, and left lateral; and below, the right inguinal, hypogastric, and left inguinal. abdominal regions
ab·dom·i·nal re·gions [TA] topographic divisions of the abdomen, as bounded by the vertical midclavicular lines and the horizontal transpyloric and interspinous (transtubercular) lines (see illustration). Synonym(s): regiones abdominis [TA], abdominal zonesab·dom·i·nal re·gions (ab-dom'i-năl rē'jŭnz) [TA] The topographic subdivisions of the abdomen; based on subdividing the abdomen by the transpyloric, transtubercular, and midinguinal planes; including the right and left hypochondriac, right and left lateral, right and left inguinal, and the unpaired epigastric, umbilical, and pubic regions.  ABDOMINAL REGIONSabdominal regionsThe abdomen and its external surface, divided into nine regions by four imaginary planes: two horizontal, one at the level of the ninth costal cartilage (or the lowest point of the costal arch) and the other at the level of the highest point of the iliac crest; two vertical, through the centers of the inguinal ligaments (or through the nipples or through the centers of the clavicles) or curved and coinciding with the lateral borders of the two abdominal rectus muscles. See: illustrationSee also: region |