Lumbosacral trunk

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Lumbosacral trunk
Lumbar plexus.svg
Plan of lumbar plexus.
Gray829.png
Dissection of side wall of pelvis showing sacral and pudendal plexuses.
Details
Latin truncus lumbosacralis
From
L4-L5
Identifiers
Gray's p.948
Dorlands
/Elsevier
t_20/12826064
TA A14.2.07.026
FMA 65535
Anatomical terms of neuroanatomy

The lumbosacral trunk is nervous tissue that connects the lumbar plexus with the sacral plexus.

Structure[edit]

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.

Additional Images[edit]

External links[edit]