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The hypoglossopharyngeal nerve. And your mom

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The spinal accessory nerve (cranial nerve XI) is involved in hyperextending and flexing the neck. This nerve innervates the trapezius and sternocleidomastoid muscles, which are involved in these movements.

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Cranial nerve 11

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15y ago
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Q: What cranial nerve is involved in hyper extending and flexing the neck?
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