Lumbosacral trunk

Lumbosacral trunk

Infobox Nerve
Name = PAGENAME
Latin = truncus lumbosacralis
GraySubject = 212
GrayPage = 948


Caption = Plan of lumbar plexus.



Caption2 = Dissection of side wall of pelvis showing sacral and pudendal plexuses.
System =
BranchFrom = L4-L5
MeshName =
MeshNumber =
DorlandsPre = t_20
DorlandsSuf = 12826064
The lumbosacral trunk is nervous tissue that connects the lumbar plexus with the sacral plexus.

tructure

The lumbosacral trunk comprises the whole of the anterior division of the fifth and a part of that of the fourth lumbar nerve; it appears at the medial margin of the psoas major and runs downward over the pelvic brim to join the first sacral nerve.

The anterior division of the third sacral nerve divides into an upper and a lower branch, the former entering the sacral plexus and the latter the pudendal plexus.

External links

* - "The Female Pelvis: The Posterolateral Pelvic Wall"
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