Upper Limb Anatomy Quiz

Which muscle is innervated by the radial nerve?

• Supinator

• Abductor pollicis longus

• Flexor carpi radialis

• Palmaris longus

The median nerve innervates which of the following muscles?

• Extensor carpi radialis longus

• Lateral two lumbricals

• Dorsal interossei

• Deltoid

Which muscle causes abduction of the arm from 0-15°?

• Upper and lower fibers of trapezius

• Supraspinatus

• Deltoid

• Infraspinatus

Pronation and supination of the forearm occur at which joints?

• Elbow joint

• Superior and inferior radio-ulnar joints

• Shoulder joint

• Radiocarpal joint

Which nerve is responsible for the winging of the scapula?

• Serratus anterior

• Deltoid

• Trapezius

• Teres minor

Wrist drop deformity results from injury to which nerve?

• Ulnar nerve

• Median nerve

• Radial nerve

• Axillary nerve

Loss of finger abduction and adduction results from a lesion of which nerve?

• Ulnar nerve

• Radial nerve

• Median nerve

• Axillary nerve

The radial nerve commonly gets injured in fractures of which part of the humerus?

• Surgical neck

• Shaft

• Head

• Medial epicondyle

The long head of the biceps brachii muscle is attached to:

• Acromion

• Coracoid process

• Supraglenoid tubercle

• Infraglenoid tubercle

The flexor carpi radialis muscle is primarily responsible for:

• Flexion and abduction of the wrist

• Flexion and adduction of the wrist

• Extension of the fingers

• Supination of the forearm