BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sternocleidomastoid and Scalenes
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Scalenes and Trapezius
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Sternocleidomastoid and Trapezius
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Trapezius and Platysma
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Detailed explanation-1: -The muscles innervated directly by the XI nerve are the trapezius and the sternocleidomastoid, in addition to the laryngeal musculature (in collaboration with the vagus nerve), such as the palatal, pharyngeal, laryngeal muscles.
Detailed explanation-2: -The accessory nerve (Fig. 1), named after Thomas Willis (Willis, 1965) cranial nerve XI, innervates the sternocleidomastoid (SCM) and trapezius muscles.
Detailed explanation-3: -The accessory nerve, also known as the eleventh cranial nerve, cranial nerve XI, or simply CN XI, is a cranial nerve that supplies the sternocleidomastoid and trapezius muscles.
Detailed explanation-4: -The trapezius is innervated for motor functions by the spinal accessory nerve (cranial nerve XI).