A 22-year-old swimmer complains of sharp posterior shoulder pain during overhead movements. MRI shows inflammation at the medial border of the scapula. Which of the following muscles originates from this region?

During a lymph node dissection, a surgeon accidentally severs a nerve passing through the suprascapular notch. What movement will most likely be weakened?

A patient presents with winging of the scapula. Which muscle attached to the anterior medial border of scapula is affected?

A baseball player has pain at the inferior angle of the scapula and difficulty extending his arm. What muscle originates here?

A weightlifter complains of pain in his upper arm when internally rotating his shoulder. Imaging reveals inflammation at the lesser tubercle of humerus. Which muscle inserts here?

A patient has weakness in arm abduction after trauma. MRI shows avulsion of the greater tubercle of the humerus. Which of the following muscles is NOT attached here?

A surgical fracture of the humerus shaft affects the radial groove. Which muscle originates from this area and extends the forearm?

After a stab wound to the anterior arm, a man is unable to flex his elbow. The muscle injured originates from the anterior distal half of the humerus. What muscle is likely damaged?

Which muscle inserts on the deltoid tuberosity of the humerus?

A patient has difficulty pronating his forearm. Which muscle originates from the medial epicondyle and inserts onto the lateral surface of the radius?

A fracture at the radial tuberosity will impair which movement most directly?

Which of the following muscles inserts on the olecranon of the ulna?

A medical intern accidentally injects local anesthetic into the interosseous membrane near the radius and ulna. Which muscle originates here and may be affected?

A man has weakness extending the thumb. Which of the following muscles that originate from the ulna is responsible for this motion?

A 25-year-old man is stabbed in the axilla. He presents with a pulsatile hemorrhage and a rapidly expanding hematoma. Which artery is most likely injured?

A woman undergoes axillary lymph node dissection for breast cancer. She later presents with weakness in shoulder abduction above 90°. Which nerve was likely damaged?

During surgery, a structure is seen running anterior to the axillary artery and joining with veins from the lateral thoracic region. What is this structure?

A teenager presents with a large, painful swelling in his axilla. It is incised and drained, revealing pus near the lateral thoracic wall. Which group of axillary lymph nodes is most likely involved?

A rock climber dislocates his humeral head inferiorly. Which structure in the axilla is most vulnerable to damage?

A newborn presents with a medially rotated, adducted arm, extended elbow, and pronated forearm following a difficult delivery. Which part of the brachial plexus is most likely injured?

A motorcyclist presents with claw hand and loss of sensation over the medial forearm and hand. Where is the brachial plexus lesion?

A patient with trauma to the axilla loses the ability to extend the wrist and fingers. He also has sensory loss over the posterior arm and hand. Which nerve is affected?

After a stab wound, a patient is unable to flex his elbow and has sensory loss over the lateral forearm. Which branch of the brachial plexus is injured?

A 35-year-old woman is found to have a mass compressing the posterior cord of the brachial plexus. Which of the following deficits would be expected?

ressing the posterior cord of the brachial plexus. Which of the following deficits would be expected?

A phlebotomist accidentally punctures a deep structure while taking blood from the median cubital vein. The patient develops a rapidly expanding hematoma and weak radial pulse. Which artery is likely injured?

A 20-year-old presents with pain and weakness in forearm flexion. Examination reveals tenderness in the cubital fossa and weakness in forearm supination and elbow flexion. Which muscle is most likely involved?

During a surgical procedure, a structure deep to the bicipital aponeurosis is injured. The patient presents with forearm flexor weakness and loss of pronation. Which nerve was injured?

Which of the following structures is located outside the cubital fossa?

A fracture of the distal humerus damages a structure in the floor of the cubital fossa. Which of the following muscles makes up this floor?

A man lifts heavy weights and feels a sudden pop in his upper arm. He can no longer supinate forcefully and shows a 'Popeye sign.' Which muscle is injured?

Injury to the musculocutaneous nerve affects all muscles in the anterior arm except:

A patient presents with weakness in shoulder flexion but intact elbow flexion. Which anterior arm muscle is most likely injured?

A deep muscle in the anterior arm inserts on the coronoid process and tuberosity of the ulna. It is a strong elbow flexor regardless of forearm position. Which muscle is this?

Which artery accompanies the musculocutaneous nerve in the anterior arm?

A man falls onto his back and fractures the midshaft of the humerus. He cannot extend his wrist. Which nerve is likely injured?

The primary extensor of the elbow is:

A 60-year-old presents with elbow extension weakness but intact wrist extension. Which muscle is most likely selectively affected?

Which of the following muscles assists in elbow extension and stabilizes the elbow joint?

Which artery travels with the radial nerve in the spiral groove of the humerus?

A 30-year-old tennis player reports pain over the medial epicondyle and difficulty flexing the wrist. Which muscle originating here inserts onto the 2nd metacarpal?

A medical student accidentally cuts her wrist. She loses the ability to oppose her thumb and flex the distal phalanx of her index finger. Which deep muscle is affected?

A patient has impaired flexion of the middle and ring fingers and weak wrist flexion. Which muscle, innervated by the median nerve, is most likely involved?

A laceration injures the ulnar nerve in the forearm. Which muscle in the anterior compartment is innervated by this nerve?

Which of the following muscles pronates the forearm and lies deepest in the distal forearm?

A 55-year-old patient has an arterial line inserted at the wrist lateral to the tendon of flexor carpi radialis. Which artery is being cannulated?

During a radial artery catheterization, a patient experiences numbness in the dorsum of the hand. Which nerve runs with the radial artery in the forearm and is likely compressed?

In the anatomical snuffbox, the radial artery lies directly on which bone?

A surgeon is harvesting the radial artery for a coronary bypass. Which branch must be ligated before the artery dives into the palm?

The radial artery contributes mainly to which palmar structure?