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level: Muscles of Pharyngeal Group

Questions and Answers List

Question	Answer
Trapezius	Origin: Occipital bone and Spinous Process (cervical and thoracic) Insertion: Spine and Acromion Process (of scapula, clavicle) Action: superior- elevates scapula (shrugging), Medial- Adduction/retraction of scapula, inferior: Depress scapula Innervation: Accessory Nerve (Cranial Nerve Xl)
Sternocleidomastoid	Origin: Manubrium of sternum and clavicle Insertion: Mastoid Process (temporal Bone) Action: flexes neck in direction of contracting muscles (unilaterally), flexes neck (bilaterally) Innervation: Accessory Nerve (Cranial Nerve Xl)