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sacral spinal nerve

Function: - motor function - S1-S2: plantar flexion of foot - S2-S4: rectal tone - sensory function - S1: lateral foot Structure: - nerves emerging from the sacral foramina (S1-S5) - ventral ramiof S1-S3 enter into formation of the sacral plexus - S4 & S5 enter into formation of the coccygeal plexus.

Related

coccygeal plexus dermatome myotome sacral plexus

Specific

1st sacral spinal nerve (S1) 2nd sacral spinal nerve (S2) 3rd sacral spinal nerve (S3) 4th sacral spinal nerve (S4) 5th sacral spinal nerve (S5)

General

spinal nerve

References

  1. Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999
  2. Geriatrics at your Fingertips, 21st edition, 2019 Reuben DB et al (eds) American Geriatric Society ISSNL 1553-152X, ISBN 978-1-886775-62-6