Mesenteric arteries
Mesenteric arteries are the arteries that supply blood to the digestive system. There are two primary mesenteric arteries: the superior mesenteric artery (SMA) and the inferior mesenteric artery (IMA). These arteries are critical for the functioning of the digestive system, as they provide the oxygen and nutrients necessary for the organs to function.
Etymology[edit | edit source]
The term "mesenteric" comes from the Greek words "mesos", meaning middle, and "enteron", meaning intestine. This is because the mesenteric arteries supply blood to the middle part of the intestine.
Superior Mesenteric Artery[edit | edit source]
The superior mesenteric artery arises from the anterior surface of the aorta, just below the celiac trunk. It travels inferiorly in the mesentery, supplying blood to the pancreas, small intestine, and part of the large intestine.
Inferior Mesenteric Artery[edit | edit source]
The inferior mesenteric artery arises from the anterior surface of the aorta, about 3-4 cm above the bifurcation of the aorta. It supplies blood to the distal part of the large intestine and the rectum.
Clinical Significance[edit | edit source]
Blockage or narrowing of the mesenteric arteries can lead to mesenteric ischemia, a serious condition that can cause abdominal pain and potentially life-threatening complications. Treatment typically involves procedures to restore blood flow, such as angioplasty or bypass surgery.
Related Terms[edit | edit source]
- Mesenteric ischemia
- Angioplasty
- Bypass surgery
- Aorta
- Celiac trunk
- Pancreas
- Small intestine
- Large intestine
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