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2024-02-01T16:48:46Z

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'''Preaortic Lymph Nodes'''

[[File:Gray602.png|thumb|right|300px|Diagram showing the network of lymph nodes in the human body. The preaortic lymph nodes are located in the abdominal region.]]

The '''Preaortic Lymph Nodes''' are a group of [[lymph nodes]] located in the [[abdomen]] in front of the [[aorta]], the main artery in the human body. They play a crucial role in the [[immune system]], helping to filter harmful substances from the lymph fluid.

==Anatomy==

The preaortic lymph nodes are situated anterior to the aorta and are divided into three main groups: the celiac, superior mesenteric, and inferior mesenteric lymph nodes. These groups correspond to the three main branches of the abdominal aorta.

===Celiac Lymph Nodes===

The [[celiac lymph nodes]] drain the [[stomach]], [[spleen]], [[pancreas]], and the upper parts of the [[duodenum]].

===Superior Mesenteric Lymph Nodes===

The [[superior mesenteric lymph nodes]] drain the lower parts of the duodenum, the [[jejunum]], [[ileum]], and the ascending and transverse parts of the [[colon]].

===Inferior Mesenteric Lymph Nodes===

The [[inferior mesenteric lymph nodes]] drain the descending and sigmoid parts of the colon and the [[rectum]].

==Function==

The preaortic lymph nodes filter lymph fluid that has drained from the abdominal organs. They help to identify and destroy bacteria, viruses, and other harmful substances that have entered the lymphatic system from these organs.

==Clinical Significance==

Enlargement or inflammation of the preaortic lymph nodes can be a sign of infection or disease in the organs they drain. This can be a useful diagnostic indicator for conditions such as [[appendicitis]], [[colitis]], or [[cancer]].

==See Also==

* [[Lymphatic system]]
* [[Lymph node]]
* [[Abdomen]]

[[Category:Anatomy]]
[[Category:Lymphatic system]]
[[Category:Immune system]]

Preaortic lymph nodes - Revision history

Prab: CSV import