C1/C2
Facial muscles, capital muscle
C3
SCM, UPPER TRAP
C4
diaphragm, partial deltoid
C5
Deltoid, biceps, rhomboids, brachioradialis, teres minor, infraspinatus
C6
ECR, pect major (clavicular head), serratus anterior, supinator, teres major
C7
Triceps, FCR, latissimus, pronator teres
C8
FCU, ECU
T1/T8
Hand intrinsics, top � intercostals, pect major (sternal portion)
T7/T9
upper abdominals
T9/T12
lower abdominals, QL
L2
hip flexion (iliopsoas)
L3
Sartorius, recutus femoris, adductors
L4
Gluteus medius, TFL, hamstrings, tibialis anterior
L5
big toe extension, tib posterior
S1
Glute max, plantar flexors
S2
anal sphincter