BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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This nerve (use Roman Numeral) controls the trapezius muscles
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III
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V
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VII
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IX
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XI
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Explanation:
Detailed explanation-1: -Your spinal accessory nerve (XI) (SA) is the 11th of 12 pairs of cranial nerves, and it controls the movements of your sternocleidomastoid and your trapezius muscles.
Detailed explanation-2: -The spinal accessory nerve (cranial nerve XI) innervates the motor function of the trapezius. The function of the trapezius is to stabilize and move the scapula.
Detailed explanation-3: -This nerve supplies the sternocleidomastoid and trapezius muscles, which have the following functions: Rotation of head away from the side of the contracting sternocleidomastoid muscle. Tilting of the head toward the contracting sternocleidomastoid muscle. Flexion of the neck by both sternocleidomastoid muscles.
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