Right colic artery
Encyclopedia
The Right Colic Artery arises from about the middle of the concavity of the superior mesenteric artery
, or from a stem common to it and the ileocolic.
It passes to the right behind the peritoneum
, and in front of the right internal spermatic or ovarian vessels, the right ureter
and the Psoas major, toward the middle of the ascending colon
; sometimes the vessel lies at a higher level, and crosses the descending part of the duodenum
and the lower end of the right kidney
.
At the colon
it divides into a descending branch, which anastomoses with the ileocolic, and an ascending branch, which anastomoses with the middle colic.
These branches form arches, from the convexity of which vessels are distributed to the ascending colon
.
Superior mesenteric artery
In 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 transverse colon, as well as the pancreas.-Location...
, or from a stem common to it and the ileocolic.
It passes to the right behind the peritoneum
Peritoneum
The peritoneum is the serous membrane that forms the lining of the abdominal cavity or the coelom — it covers most of the intra-abdominal organs — in amniotes and some invertebrates...
, and in front of the right internal spermatic or ovarian vessels, the right ureter
Ureter
In human anatomy, the ureters are muscular tubes that propel urine from the kidneys to the urinary bladder. In the adult, the ureters are usually long and ~3-4 mm in diameter....
and the Psoas major, toward the middle of the ascending colon
Ascending colon
The ascending colon is smaller in caliber than the cecum.It passes upward, from its commencement at the cecum, opposite the colic valve, to the under surface of the right lobe of the liver, on the right of the gall-bladder, where it is lodged in a shallow depression, the colic impression; here it...
; sometimes the vessel lies at a higher level, and crosses the descending part of the duodenum
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...
and the lower end of the right kidney
Kidney
The kidneys, organs with several functions, serve essential regulatory roles in most animals, including vertebrates and some invertebrates. They are essential in the urinary system and also serve homeostatic functions such as the regulation of electrolytes, maintenance of acid–base balance, and...
.
At the colon
Colon (anatomy)
The colon is the last part of the digestive system in most vertebrates; it extracts water and salt from solid wastes before they are eliminated from the body, and is the site in which flora-aided fermentation of unabsorbed material occurs. Unlike the small intestine, the colon does not play a...
it divides into a descending branch, which anastomoses with the ileocolic, and an ascending branch, which anastomoses with the middle colic.
These branches form arches, from the convexity of which vessels are distributed to the ascending colon
Ascending colon
The ascending colon is smaller in caliber than the cecum.It passes upward, from its commencement at the cecum, opposite the colic valve, to the under surface of the right lobe of the liver, on the right of the gall-bladder, where it is lodged in a shallow depression, the colic impression; here it...
.