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Spinal nerve divisions
cervical (neck), thoracic (torso), lumbar (lower back), sacral (pelvic), coccygeal (butt)
number of cervical nerves
8
number of thoracic nerves
12
number of lumbar nerves
5
number of sacral nerves
5
number of coccygeal nerves
1
I
Olfactory (smell; S)
II
Optic (vision; S)
III
Oculomotor (eyes; M)
IV
Trochlear (eyes; M)
V
Trigeminal (face, sinuses, teeth, jaw; SM)
VI
Abducens (eyes; M)
VII
Facial (SM)
VIII
Vestibulocochlear (inner ear; S)
IX
Glossopharyngeal (mouth and throat; SM)
X
Vagus (internal organs; SM)
XI
Spinal accessory (neck muscles; M)
XII
Hypoglossal (tongue muscles; M)