Nervus radialis

The video tutorial provides an in-depth look at the anatomy and function of the radial nerve, detailing its path, branches, and the muscles it innervates. It explains the sensory supply areas and discusses different types of radial nerve lesions, their causes, and symptoms. The tutorial emphasizes the importance of understanding these aspects for diagnosing and treating nerve injuries.

What is the initial path of the radial nerve in the arm?

• It runs laterally of the axillary artery.

• It runs medially of the axillary artery.

• It runs dorsally of the axillary artery.

• It runs ventrally of the axillary artery.

Where does the radial nerve divide into its motor and sensory branches?

• At the wrist

• At the shoulder

• At the hand

• At the crook of the elbow

Which muscle is NOT supplied by the radial nerve?

• Supinator

• Brachioradialis

• Biceps brachii

• Triceps brachii

What is the sensory area supplied by the radial nerve on the hand?

• The entire palm

• The radial half of the back of the hand

• The ulnar half of the back of the hand

• The fingertips

What is a common cause of a proximal radial lesion?

• Wristwatch too tight

• Humeral fracture

• Finger dislocation

• Elbow sprain

Which symptom is associated with a proximal radial lesion?

• Inability to rotate the shoulder

• Loss of sensation in the palm

• Limp drooping of the hand

• Inability to flex the fingers

What is a potential cause of a distal radial lesion?

• Shoulder dislocation

• Tight wristwatch

• Neck injury

• Elbow fracture