Is there an anastomosis between the superior and inferior mesenteric arteries?
The arc of Riolan, also known as the mesenteric meandering artery (of Moskowitz) or central anastomotic mesenteric artery, is an arterioarterial anastomosis between the superior and inferior mesenteric arteries.
Which artery branch is a Mesenterica inferior?
| Inferior mesenteric artery | |
|---|---|
| Branches | left colic artery, sigmoid branches, superior rectal artery |
| Vein | inferior mesenteric vein |
| Identifiers | |
| Latin | arteria mesenterica inferior |
What connects SMA to IMA?
The SMA and IMA are linked through the marginal artery of Drummond and may also be connected through the arc of Riolan (Fig. 11). The marginal artery of Drummond represents the major collateral arcade between the two mesenteric vessels.
Where does the SMA originate?
The SMA arises from the anterior surface of the aorta at the level of the first lumbar vertebral body and passes posterior to the neck of the pancreas and SV and follows a course medial and anterior to the uncinate process of the pancreas and the third part of the duodenum.
What supplies inferior mesenteric artery?
The branches of the inferior mesenteric artery include 1) the left colic, which is located retroperitoneally and supplies the descending colon; 2) the sigmoid branches, which supply the sigmoid colon; and 3) the superior rectal artery, which is the terminal branch of the inferior mesenteric artery at the pelvic brim.
Why hindgut is supplied by inferior mesenteric artery?
The inferior mesenteric artery (IMA) is a major branch of the abdominal aorta. It supplies arterial blood to the organs of the hindgut – the distal 1/3 of the transverse colon, splenic flexure, descending colon, sigmoid colon and rectum.
What does the IMV supply?
In human anatomy, the inferior mesenteric vein (IMV) is a blood vessel that drains blood from the large intestine.
What does the superior and inferior mesenteric artery supply?
The superior mesenteric artery supplies the midgut and the inferior mesenteric artery supplies the hindgut. It supplies the distal third of the transverse colon, the splenic flexure, the descending colon, the sigmoid colon and the rectum, as well as the superior part of the anal canal down to the dentate line.
Where does IMA supply?
What does the IMA feed?
The IMA supplies blood to the distal one-third of the transverse colon, descending colon and proximal two-thirds of the rectum.
What organs does the SMA supply?
The superior mesenteric artery provides blood to the pancreas and parts of the small intestine and large intestine.
What is SMA in anatomy?
The superior mesenteric artery (SMA) is one of the three non-paired major splanchnic arteries in the abdominal cavity arising from the abdominal aorta and supplying the midgut.