Lumbosacral trunk

Lumbosacral trunk
Plan of lumbar plexus.
Dissection of side wall of pelvis showing sacral and pudendal plexuses.
Details
From	L4-L5
Identifiers
Latin	truncus lumbosacralis
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.

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.

Lumbosacral trunk

Ramus communicans.Sacral symphatetic with S1.