Before starting the dissection, review the following surface structures (on yourself, a classmate, or a patient, but not on the cadaver).

Dorsal Wrist

• Head of ulna
• Styloid process of radius
• Proximal interphalangeal joints
• Metacarpophalangeal joints
• Tendons of extensor digitorum
• Tendon of extensor pollicis longus
• Tendon of abductor pollicis longus
• 1st dorsal interosseous muscle