Download The abdomen is subdivided into four quadrants and nine

The abdomen is subdivided into four quadrants and nine areas.
LEARNING OBJECTIVE [ edit ]
Determine the purpose of dividing the abdominopelvic portion of the body into smaller regions
KEY POINTS [ edit ]
The quadrants are labeled by location: the right upper quadrant,right lower quadrant, left upper
quadrant, and left lower quadrant.
The nine divisions or regions are smaller than the four abdominopelvic quadrants and are the
right hypochondriac, right lumbar, right inguinal (or right iliac), epigastric, umbilical, hypogastric
(or pubic), left hypochondriac, left lumbar, and left inguinal (or left iliac).
The perineum is considered to be the 10th division.
The abdomen is subdivided into four quadrants and nine areas.
TERMS [ edit ]
left upper quadrant
The left upper quadrant is the location of the left portion of the liver, the larger portion of the
stomach, the pancreas, left kidney, spleen, portions of the transverse and descending colon, and
parts of the small intestine.
Right upper quadrant
The right upper quadrant contains the right portion of the liver, the gallbladder, right kidney, a
small portion of the stomach, portions of the ascending and transverse colon, and parts of small
intestine.
right lower quadrant
In the right lower quadrant sits the cecum, appendix, part of the small intestines, the right
reproductive organs, and the right ureter.
left lower quadrant
The left lower quadrant houses the majority of the small intestine, some of the large intestine, the
left reproductive organs, and the left ureter.
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Anatomists and medical personnel divide
the abdomen into smaller regions to
facilitate study and discussion, the two
most common schemes being four
quadrants and nine areas. The
abdominopelvic quadrants evenly divide
the space of the torso below
the diaphragm into four regions referred
to simply by location: the right upper
quadrant, right lower quadrant, left upper
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quadrant, and left lower quadrant.
Abdominal Four Quadrants
The right upper quadrant contains the right portion of the liver, the gallbladder, right kidney,
a small portion of the stomach, portions of the ascending and transverse colon, and parts
ofsmall intestine. The left upper quadrant is the location of the left portion of the liver, the
larger portion of the stomach, thepancreas, left kidney, spleen, portions of the transverse and
descending colon, and parts of the small intestine. In the right lower quadrant sits
the cecum, appendix, part of the small intestines, the right reproductive organs, and the
right ureter. The left lower quadrant houses the majority of the small intestine, some of
the large intestine, the left reproductive organs, and the left ureter.
Abdominal nine divisions (a) and quadrant regions (b)
The abdomen is subdivided into four quadrants and nine areas.
Abdominal Nine Divisions
The nine divisions (sometimes also called nine quadrants) of the abdominopelvic region are
smaller than the four abdominopelvic quadrants. They allow more detailed discussion of the
following areas: right hypochondriac, right lumbar, right inguinal (or right iliac), epigastric,
umbilical, hypogastric (or pubic), left hypochondriac, left lumbar, and left inguinal (or left
iliac). The right and left hypochondriac regions are the outer and uppermost segments. The
epigastric lies between these two. The outer middle sections are the right lumbar and left
lumbar regions, with the umbilical region between them. The lowest portions are the right
and left iliac region with the hypogastric between these. The perineum is considered to be the
tenth division.