Dermatomes


Dermatomes

  • myotome: muscles innervated by spinal root
  • dermatome: sensory skin area by spinal root
  • Cervical roots come out above vertebrae, except C8
  • no C1 dermatome. C1 only motor
  • T1 below T1

Spinal Nerves

Shingles

Reflex

Nerve Root Syndromes

  • herniation cause common
  • if intervertebral disc between L4/L5 herniates: compress L5. Dorsiflexion reduced

Babinski

Primitive Reflex