Podcast
Questions and Answers
Which muscle is NOT primarily innervated by the radial nerve?
Which muscle is NOT primarily innervated by the radial nerve?
- Biceps brachii
- Triceps brachii
- Flexor carpi ulnaris (correct)
- Brachioradialis
Which action is NOT directly affected by damage to the radial nerve?
Which action is NOT directly affected by damage to the radial nerve?
- Extension of the fingers
- Extension of the elbow joint
- Supination of the forearm
- Flexion of the wrist joint (correct)
Which sensory loss is NOT associated with radial nerve injury?
Which sensory loss is NOT associated with radial nerve injury?
- Loss of sensation over the medial aspect of the forearm (correct)
- Loss of sensation over the lateral three and a half fingers
- Loss of sensation over the dorsal aspect of the hand
- Loss of sensation over the lateral aspect of the forearm
Which muscle is innervated by the radial nerve and is responsible for extending the elbow joint?
Which muscle is innervated by the radial nerve and is responsible for extending the elbow joint?
Which nerve is responsible for wrist drop and finger-drop with weak radial deviation of wrist?
Which nerve is responsible for wrist drop and finger-drop with weak radial deviation of wrist?
In which part of the arm does the radial nerve run in the spiral groove?
In which part of the arm does the radial nerve run in the spiral groove?
Which muscle does NOT receive innervation from the radial nerve?
Which muscle does NOT receive innervation from the radial nerve?
Which nerve emerges between the two heads of pronator teres muscle to enter the forearm?
Which nerve emerges between the two heads of pronator teres muscle to enter the forearm?
Which nerve is responsible for wrist drop and finger-drop with weak radial deviation of the wrist?
Which nerve is responsible for wrist drop and finger-drop with weak radial deviation of the wrist?
In which part of the arm does the radial nerve run in the spiral groove?
In which part of the arm does the radial nerve run in the spiral groove?
Which muscle is NOT primarily innervated by the radial nerve?
Which muscle is NOT primarily innervated by the radial nerve?
Which nerve emerges between the two heads of pronator teres muscle to enter the forearm?
Which nerve emerges between the two heads of pronator teres muscle to enter the forearm?
Which sensory loss is NOT associated with radial nerve injury?
Which sensory loss is NOT associated with radial nerve injury?
Study Notes
Radial Nerve
- The radial nerve is NOT primarily responsible for innervating the pronator teres muscle.
- Damage to the radial nerve does NOT directly affect pronation of the forearm.
- Numbness or tingling on the medial aspect of the hand is NOT a symptom associated with radial nerve injury.
- The extensor digitorum communis muscle is innervated by the radial nerve and is responsible for extending the elbow joint.
- The radial nerve is responsible for wrist drop and finger-drop with weak radial deviation of the wrist.
- The radial nerve runs in the spiral groove of the humerus in the arm.
- The flexor carpi radialis muscle does NOT receive innervation from the radial nerve.
- The radial nerve emerges between the two heads of the pronator teres muscle to enter the forearm.
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Description
Test your knowledge of the radial nerve and its effects on muscle innervation, motor function, and sensory loss. Identify which muscle, action, and sensory loss are not primarily associated with radial nerve injury.
