What is the corresponding spinal level of the origin of the inferior mesenteric artery (IMA)?
Understand the Problem
The question is asking for the specific spinal level from which the inferior mesenteric artery (IMA) originates. To answer it, we need to refer to anatomical knowledge regarding the arterial supply to the abdomen.
Answer
L3 vertebra
The inferior mesenteric artery (IMA) arises from the aorta at the level of the L3 vertebra.
Answer for screen readers
The inferior mesenteric artery (IMA) arises from the aorta at the level of the L3 vertebra.
More Information
The IMA supplies blood to the hindgut, which includes the descending colon, sigmoid colon, and rectum. Its origin at the level of the L3 vertebra is important in surgical procedures involving the abdominal aorta and its branches.
Tips
A common mistake is confusing the vertebral levels of different abdominal arteries. The celiac trunk originates around T12, the superior mesenteric artery at L1, and the inferior mesenteric artery at L3.
Sources
- Inferior mesenteric artery | Radiology Reference Article - Radiopaedia - radiopaedia.org
- Inferior mesenteric artery - Wikipedia - en.wikipedia.org
- Anatomy, Abdomen and Pelvis: Inferior Mesenteric Artery - NCBI - ncbi.nlm.nih.gov
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