Biomechanics 1 final exam USAHS questions with correct answers
Supraspinatus origin, insertion, action, and innervation - Correct Answer-Origin: supraspinous fossa of the scapula Insertion: superior facet of the greater tubercle of the humerus and the capsule of the shoulder joint Action: abducts and externally rotates the humerus and stabilizes the humeral head Innervation: suprascapular (C5,C6) Infraspinatus origin, insertion, action, and innervation - Correct Answer-Origin: infraspinous fossa of the scapula Insertion: middle facet of the greater tubercle of the humerus and the capsule of the shoulder joint Action: external rotation of the humerus and stabilizes the humeral head
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