Compartments of the Forearm and Extensor Mechanism

The anterior (flexor) compartment of the forearm is innervated primarily by the (a)   nerve.

• Radial
• Median
• Ulnar
• Musculocutaneous

The posterior (extensor) compartment of the forearm is exclusively innervated by the (a)   nerve and its branches.

• Radial
• Median
• Ulnar
• Musculocutaneous

(a)   is a muscle that is part of the Mobile Wad.

• Brachioradialis
• Flexor carpi ulnaris
• Pronator teres
• Palmaris longus

Which muscle is part of the Mobile Wad?

• Extensor carpi radialis longus

• Flexor digitorum profundus

• Supinator

• Anconeus

(a)   is a muscle that is part of the Mobile Wad.

• Extensor carpi radialis brevis
• Flexor pollicis longus
• Pronator quadratus
• Flexor carpi radialis

The Mobile Wad is innervated by the ________ nerve.

The muscle in the superficial layer responsible for wrist flexion and radial deviation is (a)   .

• Flexor carpi radialis
• Flexor carpi ulnaris
• Palmaris longus
• Pronator teres

Which muscle in the superficial layer is sometimes congenitally absent and is responsible for wrist flexion?

The function of the flexor digitorum superficialis in the intermediate layer of the anterior compartment is flexion of the (a)   phalanges of digits 2-5.

• Middle
• Distal
• Proximal
• Inferior

The flexor digitorum superficialis has a unique split tendon design to allow deeper tendons to pass through.

• True

• False