Upper Limb Practice Questions & Answers (100% correct)

1. The long head of the triceps brachii originates on which of the following? A. Clavicle B. Humerus C. Radius D. Scapula E. Ulna correct answersD. Scapula 2. Unlike the other parts of the scapulohumeral (or "SITS") muscle group of the rotator cuff, which of the following inserts on the lesser tubercle instead of the greater tubercle? A. Supraspinatus B. Infraspinatus C. Teres minor D. Subscapularis correct answersD. Subscapularis 3. A 17-year-old boy presents to the emergency department with limitation of movement in his right arm. He says that he was drinking last night with his friends. When he woke up this morning, he was not able to move his arm, which was completely normal yesterday. His past medical history is negative. During physical exam, he has difficulty extending the elbow, the wrist, and the digits. He also has sensory abnormalities on the posterior part of his arm, forearm, and hand. The rest of the exam is correct answersB. Radial nerve at the axilla 4. Part of the scapulohumeral or "SITS" muscle group of the rotator cuff, which of the following inserts on the greater tubercle and runs above the glenohumeral joint? A. Supraspinatus B. Infraspinatus C. Teres minor D. Teres major correct answersA. Supraspinatus 5. The major muscles of the posterior forearm are all innervated by which major nerve? A. Ulnar