Marginal artery of Drummond
Updates to Article Attributes
The marginal artery of Drummond,also known as the marginal artery of the colon, is a continuous continuous arterial circle or arcade along the inner border of thecolon formed by thethe anastomoses of the terminal branches of thesuperior mesenteric artery (SMA) andinferior mesenteric artery (IMA).
Gross anatomy
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superior mesenteric artery (SMA)
- ileocolic artery: colic branch
- right colic artery: ascending and descending branches
- middle colic artery: right and left branches
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inferior mesenteric artery (IMA)
- left colic artery: ascending and descending branches
- sigmoid arteries: unnamed terminal branches
Straight vessels (known as vasa recta) pass from this marginal artery to to the colon.
The marginal artery is an important connection between the SMA and IMA providing collateral collateral flow in the event of occlusion or significant stenosis.
The junction of the SMA and IMA territories is at the splenic flexure. Anastomoses here are often weak or absent, hence the marginal artery at this point (known as Griffiths pointGriffiths point) is often focally small or discontinuous. For this reason, the splenic flexure is a watershed (border zone) area prone to ischaemia and infarction.
The other important connection between the SMA and IMA (though only variably present) is the mesenteric meandering artery (arc of Riolan).
See also
-<p>The <strong>marginal artery of Drummond</strong>,<strong> </strong>also known as the <strong>marginal artery of the colon</strong>, is a continuous arterial circle or arcade along the inner border of the <a href="/articles/colon">colon</a> formed by t<span style="line-height:1.6">he anastomoses of the terminal branches of the </span><a style="line-height: 1.6;" href="/articles/superior-mesenteric-artery">superior mesenteric artery</a><span style="line-height:1.6"> (SMA) and </span><a style="line-height: 1.6;" href="/articles/inferior-mesenteric-artery">inferior mesenteric artery</a><span style="line-height:1.6"> (IMA).</span></p><h4>Gross anatomy</h4><ul>- +<p>The <strong>marginal artery of Drummond</strong>,<strong> </strong>also known as the <strong>marginal artery of the colon</strong>, is a continuous arterial circle or arcade along the inner border of the <a href="/articles/colon">colon</a> formed by the anastomoses of the terminal branches of the <a href="/articles/superior-mesenteric-artery">superior mesenteric artery</a> (SMA) and <a href="/articles/inferior-mesenteric-artery">inferior mesenteric artery</a> (IMA).</p><h4>Gross anatomy</h4><ul>
-</ul><p>Straight vessels (known as vasa recta) pass from this marginal artery to the colon.</p><p>The marginal artery is an important connection between the <a href="/articles/superior-mesenteric-artery">SMA</a> and <a href="/articles/inferior-mesenteric-artery">IMA</a> providing collateral flow in the event of occlusion or significant stenosis. </p><p>The junction of the SMA and IMA territories is at the splenic flexure. Anastomoses here are often weak or absent, hence the marginal artery at this point (known as Griffiths point) is often focally small or discontinuous. For this reason, the <a href="/articles/left-colic-flexure">splenic flexure</a> is a watershed (border zone) area prone to ischaemia and infarction.</p><p>The other important connection between the SMA and IMA (though only variably present) is the mesenteric meandering artery (<a href="/articles/arc-of-riolan">arc of Riolan</a>).</p><h4>See also</h4><ul>- +</ul><p>Straight vessels (known as vasa recta) pass from this marginal artery to the colon.</p><p>The marginal artery is an important connection between the <a href="/articles/superior-mesenteric-artery">SMA</a> and <a href="/articles/inferior-mesenteric-artery">IMA</a> providing collateral flow in the event of occlusion or significant stenosis. </p><p>The junction of the SMA and IMA territories is at the splenic flexure. Anastomoses here are often weak or absent, hence the marginal artery at this point (known as <a title="Griffiths point" href="/articles/griffiths-point-2">Griffiths point</a>) is often focally small or discontinuous. For this reason, the <a href="/articles/left-colic-flexure">splenic flexure</a> is a watershed (border zone) area prone to ischaemia and infarction.</p><p>The other important connection between the SMA and IMA (though only variably present) is the mesenteric meandering artery (<a href="/articles/arc-of-riolan">arc of Riolan</a>).</p><h4>See also</h4><ul>
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