Lumbar spinal nerve 4

The lumbar spinal nerve 4 (L4) is a spinal nerve of the lumbar segment.^[1]

It originates from the spinal column from below the lumbar vertebra 4 (L4).

Muscles

L4 supplies many muscles, either directly or through nerves originating from L4. They are not innervated with L4 as single origin, but partly by L4 and partly by other spinal nerves. The muscles are:

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Additional Images

Lumbar spinal nerve 4

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References

^ American Medical Association Nervous System -- Groups of Nerves

Nerves: spinal nerves (TA A14.2, GA 9.916)

Cervical (8)

C1, C2, C3, C4, C5, C6, C7, C8

anterior (Cervical plexus, Brachial plexus) – posterior (Posterior branches of cervical nerves, Suboccipital – C1, Greater occipital – C2, Third occipital – C3)

Thoracic (12)

T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12

anterior (Intercostal, Intercostobrachial – T2, Thoraco-abdominal nerves – T7–T11, Subcostal – T12) – posterior (Posterior branches of thoracic nerves)

Lumbar (5)

L1, L2, L3, L4, L5

anterior (Lumbar plexus, Lumbosacral trunk) · posterior (Posterior branches of the lumbar nerves, Superior cluneal L1–L3)

Sacral (5)

S1, S2, S3, S4, S5

anterior (Sacral plexus) · posterior (Posterior branches of sacral nerves, Medial cluneal nerves)

Coccygeal (1)

anterior (Coccygeal plexus) · posterior (Posterior branch of coccygeal nerve)

M: PNS

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noco/auto/cong/tumr, sysi/epon, injr

proc, drug (N1B)

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Last modified on 1 December 2012, at 14:57