Nervous System – Level by Level
C1 (Atlas): Head, neck, inner and middle ear, sympathetic nerves C2 (Axis): Head, neck, upper cervical muscles, occipital nerves, suboccipital muscles, posterior cervical muscles C3: Diaphragm, neck, trapezius muscles C4: Upper shoulders, diaphragm, neck, trapezius muscles, levator scapulae muscles C5: Upper arms, diaphragm, elbows, biceps, deltoids, rhomboids C6: Wrists, thumbs, biceps, wrists, rotator cuff muscles, … Read more