Question

What is collateral circulation related to SMA and IMA?

1) Collateral circulation is the backup blood supply to the small intestine provided by the superior mesenteric artery (SMA) and inferior mesenteric artery (IMA).
2) Collateral circulation is the backup blood supply to the large intestine provided by the superior mesenteric artery (SMA) and inferior mesenteric artery (IMA).
3) Collateral circulation is the backup blood supply to the liver provided by the superior mesenteric artery (SMA) and inferior mesenteric artery (IMA).
4) D. Collateral circulation is the backup blood supply to the kidney provided by the superior mesenteric artery (SMA) and inferior mesenteric artery (IMA).

Answer 1

Option 1). Collateral circulation is the backup blood supply to the small intestine provided by the superior mesenteric artery (SMA) and inferior mesenteric artery (IMA). The alimentary canal is supplied by different arteries depending on its location in the body. The anterior parts are supplied by arteries branching off the aortic arch and thoracic aorta, while the intestines are supplied by branches from the abdominal aorta.

Step-by-step explanation:

The secondary blood supply to the small intestine that is supplied by the inferior and superior mesenteric arteries is known as collateral circulation (IMA). Particularly, arteries arising from the thoracic aorta and aortic arch supply the front portions of the alimentary canal, whilst branches from the abdominal aorta supply the remaining intestines.