Elbow and Shoulder Anatomy Quiz
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Which of the following muscles assists with supination of the forearm?
A. Biceps Brachii
B. Triceps Brachii
C. Supinator
D. Pronator Quadratus
What is the nerve innervation for the Pronator Quadratus?
A. Musculocutaneous nerve
B. Radial nerve
C. Median nerve
D. Ulnar nerve
Which muscle assists with the extension of the elbow joint?
A. Brachialis
B. Triceps Brachii
C. Supinator
D. Pronator Quadratus
What is the origin of the long head of the Biceps Brachii?
A. Supraglenoid tubercle of the scapula
B. Coracoid process of the scapula
C. Distal humerus
D. Radial tuberosity
What can result from a contracture in elbow extension?
A. Increased joint mobility
B. Extension deformity of the elbow
C. Increased ROM
D. Increased muscle strength
What is the function of the Rotator Cuff in shoulder stability?
A. Flexes the shoulder
B. Stabilizes the humeral head within the glenoid during movement
C. Extends the elbow
D. Promotes biceps tendon function
What is the function of the Supinator muscle?
A. Flexes the elbow
B. Pronation of the forearm
C. Supinates the forearm
D. Extends the elbow
Which muscle works to stabilize the scapula during shoulder movement?
A. Serratus Anterior
B. Deltoid
C. Biceps Brachii
D. Triceps Brachii
Which muscle group assists in elbow flexion?
A. Extensor muscles of the wrist
B. Flexor muscles of the wrist and fingers
C. Triceps Brachii
D. Anconeus
What can result from weakness in the Rotator Cuff muscles?
A. Shoulder stability
B. Biceps tendon overcompensation
C. Shoulder abduction
D. Elbow extension
What is the normal range of motion (ROM) for elbow flexion?
A. 0° to 90°
B. 0° to 120°
C. 0° to 145°-160°
D. 0° to 180°
Which muscle primarily assists in elbow extension?
A. Triceps Brachii
B. Biceps Brachii
C. Brachialis
D. Supinator
What is the origin of the Brachioradialis muscle?
A. Lateral supracondylar ridge of the humerus
B. Supraglenoid tubercle of the scapula
C. Coracoid process of the scapula
D. Distal part of the anterior surface of the humerus
What is the nerve supply for the Brachioradialis muscle?
A. Ulnar nerve
B. Median nerve
C. Radial nerve
D. Musculocutaneous nerve
What is the normal range of motion (ROM) for forearm supination?
A. 0° to 45°
B. 0° to 90°
C. 0° to 120°
D. 0° to 180°
