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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 ?
KERESLEY flank forward David Taylor has received an 84-day ban from an RFU disciplinary panel.
At 23, he was a brilliant flank forward for his hometown team of Hawick and was on the brink of a Scotland cap when he was diagnosed as having TB.
KEEP IT SIMPLE: Schalk Burger, the South Africa flank forward, passes the ball during the Springboks' Captain's Run at the Stade de France yesterday.
Mitchell has singled out the contributions made by flank forward Tom Jordan and rising fly half Sam Robinson.
Wilks joined Orrell at the beginning of last season from Premiership outfit Sale Sharks and soon made his mark as a hard tackling flank forward who was equally at home on either side of the scrum.
The talented flank forward was carried off the pitch after collapsing 20 minutes into the opening game of the Under-19 World Cup against New Zealand in on Saturday.
Man mountain Baugh, a 15-stone flank forward, has won 30 international caps for Canada and was a big hit with the budding young rugby stars, along with fellow forward Malpas, back Smith and winger Abdul.
But it was a better day for his Leinster team-mate Keith Gleeson who took the man-of-the-match award with another superb performance at flank forward.
Five minutes later, flank forward Lee Crofts scored in his 199th appearance for the club and Davies converted.
Then, surprisingly, champions Pontypridd seemed to throttle back and Ebbw Vale clawed their way back when scrum-half David Llewellyn made a break and sent in flank forward Noel Thomas for a try that Alun Harries converted.
While Allen believes the players will raise their level of performance with a bumper attendance at his home ground, the former Alnwick flank forward is realistic about his side's chances.
'I'm looking forward to catching up with him and having a yarn.': FROM PAGE 41: THE KIWI NEW CAPS:Chris masoe the Taranaki and Hurricanes flank forward takes Richie McCaw's place in Graham Henry's line-up, earning his call-up after a blockbusting year at provincial level.