13 Questions
Which muscle is NOT primarily innervated by the radial nerve?
Flexor carpi ulnaris
Which action is NOT directly affected by damage to the radial nerve?
Flexion of the wrist joint
Which sensory loss is NOT associated with radial nerve injury?
Loss of sensation over the medial aspect of the forearm
Which muscle is innervated by the radial nerve and is responsible for extending the elbow joint?
Triceps brachii
Which nerve is responsible for wrist drop and finger-drop with weak radial deviation of wrist?
Radial nerve
In which part of the arm does the radial nerve run in the spiral groove?
Lateral side
Which muscle does NOT receive innervation from the radial nerve?
Pronator teres
Which nerve emerges between the two heads of pronator teres muscle to enter the forearm?
Median nerve
Which nerve is responsible for wrist drop and finger-drop with weak radial deviation of the wrist?
Radial nerve
In which part of the arm does the radial nerve run in the spiral groove?
Posterior side of the arm
Which muscle is NOT primarily innervated by the radial nerve?
Biceps brachii
Which nerve emerges between the two heads of pronator teres muscle to enter the forearm?
Median nerve
Which sensory loss is NOT associated with radial nerve injury?
Loss of sensation over the first dorsal web space
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.
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.
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