Forearm & Hand Questions

What is the common origin of the superficial muscles on the anterior forearm?

• lateral epicondyle

• medial epicondyle

• mid-shaft radius

• olecranon process

What muscle is able to assist with wrist adduction?

• supinator

• flexor carpi ulnaris

• flexor carpi radialis

• extensor digitorum

What muscle performs elbow flexion while in a semi-pronated position?

• pronator quadratus

• supinator

• brachialis

• brachioradialis

The most distal joint that flexor digitorum superficialis can act on is:

• distal interphalangeal joint

• proximal interphalangeal joint

• metacarpo-phalangeal joint

• carpo-metacarpal joint

A muscle that pronates as a main action must insert on which bone?

• radius

• ulna

• humerus

What is the innervation of extensor indices?

• ulnar nerve

• median nerve

• radial nerve

• musculocutaneous nerve

What is the common origin of the thenar muscles of the hand (excluding adductor pollicis brevis)?

• extensor retinaculum

• flexor retinaculum

• hamate

• carpal tunnel

What muscle is described below:

Origin: Anterior radius and lateral half of the interosseous membrane

Insertion: Palmar surface of distal phalanx of the thumb

Innervation: Median nerve

• flexor digitorum longus

• opponens pollicis

• flexor pollicis longus

• flexor pollicis brevis

What axis does pronator teres produce movement around?

• longitudinal

• transverse

• sagittal

• frontal

What muscle inserts on the styloid process of the radius?