Oberflächliche Extensoren des Unterarms

This video tutorial provides an in-depth look at the superficial extensors of the forearm, focusing on three key muscles: the extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris. It covers their anatomical positions, functions, origins, and attachments. Additionally, the tutorial explains the innervation of these muscles by the radial nerve, highlighting its branches and their roles in motor and sensory functions.

Which muscle group is located on the dorsal side of the forearm and is easily palpable?

• Supinator muscles

• Superficial extensors

• Deep flexors

• Pronator muscles

What is the primary function of the extensor digitorum muscle?

• Abduction of the thumb

• Flexion of the wrist

• Rotation of the forearm

• Extension of the fingers

Where does the extensor digitorum muscle originate?

• Posterior side of the ulna

• Lateral epicondyle of the humerus

• Medial epicondyle of the humerus

• Anterior surface of the radius

Which muscle is responsible for the extension and spreading of the fifth finger?

• Extensor carpi radialis

• Extensor digitorum

• Extensor digiti minimi

• Extensor carpi ulnaris

What is the origin of the extensor digiti minimi muscle?

• Lateral epicondyle of the humerus

• Posterior side of the ulna

• Medial epicondyle of the humerus

• Anterior surface of the radius

Which muscle has a dual origin from the lateral humeral epicondyle and the posterior side of the ulna?

• Extensor carpi radialis

• Extensor digitorum

• Extensor digiti minimi

• Extensor carpi ulnaris

Which nerve is responsible for innervating the superficial extensors of the forearm?

• Musculocutaneous nerve

• Ulnar nerve

• Median nerve

• Radial nerve