Beginner Radial Nerve Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. From which cord of the brachial plexus does the radial nerve arise?
- Upper trunk
- Lateral cord
- Medial cord
- Posterior cord
Q2. Which spinal nerve roots typically contribute fibers to the radial nerve?
- C1 to C4
- C5 to T1
- C8 to T3 only
- T1 to T5
Q3. Which muscle in the posterior arm receives its motor supply from the radial nerve?
- Biceps brachii
- Pronator teres
- Triceps brachii
- Coracobrachialis
Q4. Through which space does the radial nerve leave the axilla to enter the posterior arm?
- Triangular space
- Quadrangular space
- Triangular interval
- Cubital tunnel
Q5. Which artery accompanies the radial nerve into the posterior compartment of the arm?
- Anterior interosseous artery
- Posterior circumflex humeral artery
- Profunda brachii artery
- Ulnar artery
Q6. Which groove of the humerus is closely related to the radial nerve?
- Ulnar groove
- Radial groove
- Bicipital groove of the radius
- Intertubercular sulcus
Q7. Which movement is strongly associated with radial nerve motor function in the upper limb?
- Thumb opposition
- Extension
- Forearm pronation
- Finger adduction
Q8. Which muscle besides triceps brachii is supplied by the radial nerve in the arm?
- Pronator teres
- Flexor carpi ulnaris
- Anconeus
- Biceps brachii
Q9. A significant radial nerve injury can produce which characteristic motor deficit at the wrist?
- Fixed wrist extension
- Loss of thumb opposition only
- Claw hand
- Wrist drop
Q10. Which description best identifies the radial nerve?
- A lateral cord nerve supplying only anterior arm muscles
- A posterior cord nerve supplying major extensor muscles of the upper limb
- A medial cord nerve supplying only intrinsic hand muscles
- A sensory nerve confined to the shoulder