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This type of descending motor pathway originates in the brainstem and governs automatic movements that help regulate muscle tone, posture and balance.
Origin and insertion. The levator scapulae originates from the posterior tubercle of the transverse process of cervical vertebrae one to four. The levator scapulae may lie deep to the sternocleidomastoideus at its origin, deep or adjacent to the splenius capitis at its origin and mid-portion, and deep to the trapezius in its lower portion.