The preaortic lymph nodes lie in front of the
aorta
The aorta ( ; : aortas or aortae) is the main and largest artery in the human body, originating from the Ventricle (heart), left ventricle of the heart, branching upwards immediately after, and extending down to the abdomen, where it splits at ...
, and may be divided into
celiac lymph nodes,
superior mesenteric lymph nodes, and
inferior mesenteric lymph nodes
The inferior mesenteric lymph nodes consist of:
* (a) small glands on the branches of the left colic and sigmoid arteries
* (b) a group in the sigmoid mesocolon, around the superior hemorrhoidal artery
* (c) a pararectal group in contact with the ...
groups, arranged around the origins of the corresponding arteries.
The celiac lymph nodes are grouped into three sets: the
gastric,
hepatic
The liver is a major metabolic organ (anatomy), organ exclusively found in vertebrates, which performs many essential biological Function (biology), functions such as detoxification of the organism, and the Protein biosynthesis, synthesis of var ...
and
splenic lymph nodes. These groups also form their own subgroups.
The superior mesenteric lymph nodes are grouped into three sets: the
mesenteric,
ileocolic and
mesocolic lymph nodes.
The inferior mesenteric lymph nodes have a subgroup of
pararectal lymph nodes.
The preaortic lymph nodes receive a few vessels from the
lateral aortic lymph nodes, but their principal afferents are derived from the organs supplied by the three arteries with which they are associated–the
celiac,
superior and
inferior mesenteric arteries.
Some of their efferents pass to the
retroaortic lymph nodes, but the majority unite to form the
intestinal lymph trunk, which enters the
cisterna chyli.
Additional images
File:Gray621.png, Deep lymph nodes and vessels of the thorax and abdomen.
References
External links
* http://www.instantanatomy.net/thorax/vessels/lnodes.html
Lymphatics of the torso
{{Portal bar, Anatomy