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2. Lumbosacral trunk - Wikipedia

   en.wikipedia.org/wiki/Lumbosacral_trunk

   The lumbosacral trunk is formed by the union of the entire anterior ramus of lumbar nerve L5 and a part of L4 [clarification needed]. [1] [2] [3] L4 first issues its branches to the lumbar plexus, then emerges from the medial border of the psoas muscle [3] to unite with the anterior ramus of L5 just superior to the pelvic brim to form the thick, cord-like trunk which [4] crosses the pelvic ...

3. Lumbosacral plexus - Wikipedia

   en.wikipedia.org/wiki/Lumbosacral_plexus

   Lumbosacral trunk and sacral plexus ... This article incorporates text in the public domain from page 948 of the 20th edition of Gray's Anatomy (1918) ...

4. Lumbar nerves - Wikipedia

   en.wikipedia.org/wiki/Lumbar_nerves

   The first three lumbar nerves, and the greater part of the fourth together form the lumbar plexus. The smaller part of the fourth joins with the fifth to form the lumbosacral trunk, which assists in the formation of the sacral plexus. The fourth nerve is named the furcal nerve, from the fact that it is subdivided between the two plexuses.

5. Sacral plexus - Wikipedia

   en.wikipedia.org/wiki/Sacral_plexus

   the lumbosacral trunk; the anterior division of the first sacral nerve; portions of the anterior divisions of the second and third sacral nerves; The nerves forming the sacral plexus converge toward the lower part of the greater sciatic foramen, and unite to form a flattened band, from the anterior and posterior surfaces of which several ...

6. Lumbar plexus - Wikipedia

   en.wikipedia.org/wiki/Lumbar_plexus

   It is formed by the divisions of the first four lumbar nerves (L1-L4) and from contributions of the subcostal nerve (T12), which is the last thoracic nerve. Additionally, the ventral rami of the fourth lumbar nerve pass communicating branches, the lumbosacral trunk, to the sacral plexus. The nerves of the lumbar plexus pass in front of the hip ...

7. Sacrum - Wikipedia

   en.wikipedia.org/wiki/Sacrum

   The alae support the psoas major muscles and the lumbosacral trunk which connects the lumbar plexus with the sacral plexus. In the articulated pelvis, the alae are continuous with the iliac fossa. Each ala is slightly concave from side to side, and convex from the back and gives attachment to a few of the fibers of the iliacus muscle. The ...

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9. Inferior gluteal nerve - Wikipedia

   en.wikipedia.org/wiki/Inferior_gluteal_nerve

   The muscle is supplied by the inferior gluteal nerve which arises from the dorsal branches of the ventral rami of the fifth (L5), the first and second sacral nerves. [2]The lumbosacral trunk, which is made up of L5 and a small branch of L4, effectively connects the lumbar and sacral plexuses. [3]