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a plane with more or less definite boundaries; called also regio. adj., adj re´gional.
abdominal r's the areas into which the anterior surface of the abdomen is divided, including the epigastric, hypochondriac (right and left), iliac (right and left), lumbar (right and left), hypogastric, and umbilical.
Nine abdominopelvic regions. From Applegate, 2000.
See illustration.
AN region the area of the heart where the atrial fibers merge with the atrioventricular node.
anal region the part of the perineal region that surrounds the anus.
axillary region the area of the upper chest surrounding the axilla, lateral to the pectoral region.
epigastric region the abdominal region that is superior and central in location, above the umbilical region and between the two hypochondriac regions.
facial region that comprising the various anatomical regions of the face, divided into buccal (side of oral cavity), infraorbital (below eye), mental (chin), nasal (nose), oral (lips), orbital (eye), parotid (angle of jaw), and zygomatic (cheek bone) regions.
H region the area of the bundle of His from its connection with the atrioventricular node to its branching portion.
homology r's looped structures, comprising approximately 100 amino acid residues and fastened by disulfide bonds, that show similarities in primary structure from one region to another. They represent the building blocks or units of immunoglobulin molecules.
hypochondriac region either of the abdominal regions that are in superior lateral locations, one on the left (left hypochondriac region) and one on the right (right hypochondriac region) of the epigastric region; called also hypochondrium.
hypogastric region suprapubic region.
I region that part of the major histocompatibility complex where immune response genes are present.
iliac region inguen.
inframammary region the part of the pectoral region inferior to the breast, bordered inferiorly by the hypochondriac region of the abdomen.
inguinal region inguen.
lateral region either of the abdominal regions that are in central lateral locations, one to the left (left lateral region) and one to the right (right lateral region) of the umbilical region; called also flank and lumbar region.
lateral pectoral region the most lateral part of the pectoral region, bounded laterally by the axillary region.
lumbar region
1. the region of the back lying lateral to the lumbar vertebrae. See also loin.
mammary region the part of the pectoral region surrounding the mammary gland.
N region [nodal region] the region of the atrioventricular node consisting of the body of the node.
NH region [nodal-His region] the area where the atrioventricular node becomes the bundle of His.
pectoral region the aspect of the chest overlying the pectoralis major muscle, subdivided into the lateral pectoral, mammary, and inframammary regions.
pelvic region suprapubic region.
perineal region the region underlying the pelvic outlet, subdivided into the anal and urogenital regions.
precordial region the part of the anterior surface of the body covering the heart and the pit of the stomach.
presternal region the region of the thorax overlying the sternum, bounded laterally by the pectoral regions.
pubic region suprapubic region.
suprapubic region the abdominal region that is inferior and central in location, below the umbilical region and between the two iliac(inguinal) regions; called also hypogastric or pelvic region.
umbilical region the abdominal region that is most central in location, surrounding the umbilicus; it is bounded laterally by the two lateral or lumbar regions, superiorly by the epigastric region, and inferiorly by the suprapubic or hypogastric region.
urogenital region the part of the perineal region that surrounds the external genital organs and the urethral orifice,
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


(flank), [TA]
The area of the abdomen on each side of the umbilical region between transpyloric plane and intertubercular or interspinous plane.
Farlex Partner Medical Dictionary © Farlex 2012


The section of flesh on the body of a person or an animal between the last rib and the hip; the side.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


, gen. lateris, pl. latera (lā'tus, lat'ĕr-is, lat'ĕr-a) [TA]
The side of the body between the pelvis and the ribs.
Synonym(s): flank.
[L. side]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Patient discussion about flank

Q. I have chronic pancreatitus, and my doctor cannot figure out why my pain is in my kidney area (right flank)? Does anybody know why that is?

A. Pancreatic pain can sometimes cause refferred pain to the waist and back in a "belt-shape" form. This is due to the nerve supply to the pancreas and its origin. I would also recommend to get an ultrasound of the kidney just to make sure there is no pathology there.

More discussions about flank
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References in periodicals archive ?
Both goals came off corners taken by Sandro from the right flank.
DALLAS -- While cryolipolysis and high-intensity focused ultrasound are both effective at reducing subcutaneous fat in the flank region, cryolipolysis appeared to be less painful and more effective in a small, randomized trial.
The method needs FE analysis of tooth with wheel and tooth flank deformation approximation for teeth pair.
Once NPTF threads are wrench-tightened there is thread contact at the crest and root and also at the flank.
Downing would be a threat coming in off the right while Adomah and Carayol are just as useful on either flank.
The cylindrical worm having the flanks as helical surfaces of a convolute helicoid of the second specie has the property that in the normal section on the reference medium helix of the tooth or of the tooth space.
In an exercise in deferred gratification, you enter through a solid timber door set in a blade of masonry some 7.5m high and flanked by equally tall etched glass panels 250mm wide.
Uses both flanks of the insert and produces a "balanced" wear pattern that can sometimes extend tool life.
By feigning retreat, Morgan was able to lure Tarleton's forces into a trap, where he was hit not only on the front by the militia (which had only temporarily retreated) but on the flanks as well by other American forces.
The new Truefresh frozen Atlantic Salmon Fillets help to eliminate concerns that commercial kitchens typically have about freshness, preparation time and waste associated with purchasing whole salmon flanks fillets.
Lava had apparently erupted from the island's center and spread equally around the flanks of the volcano in the last 6 million years, making a cone-shaped island subsequently sculpted by erosion.
He won't exactly turn the other cheek but he is likely to expose one of his flanks - and did you ever see a lion who could ignore a juicy, exposed flank?