An upper transverse line, the
transpyloric is located halfway between the jugular notch and the upper border of the symphysis pubis; this indicates the margin of the
transpyloric plane, which in most cases cuts through the
pylorusThe pylorus is the region of the stomach that connects to the duodenum. It is divided in two parts:* the pyloric antrum, which connects to the body of the stomach.* the pyloric canal, which connects to the duodenum....
, the tips of the ninth
costal cartilagesThe costal cartilages are bars of hyaline cartilage which serve to prolong the ribs forward and contribute very materially to the elasticity of the walls of the thorax.-Differences from 1-12:...
and the lower border of the first lumbar vertebra.
The transpyloric plane is clinically notable because it passes through several important abdominal structures.
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An upper transverse line, the
transpyloric is located halfway between the jugular notch and the upper border of the symphysis pubis; this indicates the margin of the
transpyloric plane, which in most cases cuts through the
pylorusThe pylorus is the region of the stomach that connects to the duodenum. It is divided in two parts:* the pyloric antrum, which connects to the body of the stomach.* the pyloric canal, which connects to the duodenum....
, the tips of the ninth
costal cartilagesThe costal cartilages are bars of hyaline cartilage which serve to prolong the ribs forward and contribute very materially to the elasticity of the walls of the thorax.-Differences from 1-12:...
and the lower border of the first lumbar vertebra.
Structures crossed
The transpyloric plane is clinically notable because it passes through several important abdominal structures. These include:
- lumbar vertebra 1 and hence passes just before the end of the spinal cord
The spinal cord is a long, thin, tubular bundle of nervous tissue and support cells that extends from the brain. The brain and spinal cord together make up the central nervous system. It is around 45 cm long in men and around 43 cm long in women. The length of the spinal cord is much shorter than...
in adults.
- the fundus of the gallbladder
- the neck of the pancreas
- the pancreatic body
- the origins of the superior mesenteric artery
See also: Superior Mesenteric Artery SyndromeIn human anatomy, the superior mesenteric artery arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies the intestine from the lower part of the duodenum through two-thirds of the...
from the aortaThe aorta is the largest artery in the body, originating from the left ventricle of the heart and bringing oxygenated blood to all parts of the body in the systemic circulation....
and portal vein
- the left and right colic flexure
Colic flexure can refer to:* Hepatic flexure * Splenic flexure...
- the left hilum of the kidney
- the right hilum of the kidney
- the root of the transverse mesocolon
The transverse mesocolon is a broad, meso-fold of peritoneum, which connects the transverse colon to the posterior wall of the abdomen.It is continuous with the two posterior layers of the greater omentum, which, after separating to surround the transverse colon, join behind it, and are continued...
- duodenojejunal flexure
The duodenojejunal flexure or duodenojejunal junction is the border between the duodenum and the jejunum.The ascending portion of the duodenum ascends on the left side of the aorta, as far as the level of the upper border of the second lumbar vertebra, where it turns abruptly forward to become the...
- the 2nd part of the duodenum
The duodenum is the first section of the small intestine in most higher vertebrates, including mammals, reptiles, and birds. In fish, the divisions of the small intestine are not as clear and the terms anterior intestine or proximal intestine may be used instead of duodenum...
- the upper part of conus medullaris
The conus medullaris is the terminal end of the spinal cord. It occurs near lumbar vertebral levels 1 and 2 . After the spinal cord tapers out, the spinal nerves continue as dangling nerve roots. This terminal nerve root tail is referred to as the filum terminale...
- the spleen
The spleen is an organ found in virtually all vertebrate animals with important roles in regard to red blood cells and the immune system In humans, it is located in the left upper quadrant of the abdomen. It removes old red blood cells, holds a reserve in case of hemorrhagic shock, especially in...
External links
- http://medical-dictionary.thefreedictionary.com/_/viewer.aspx?path=dorland&name=plane(2).jpg