Intermediate Brachioradialis Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which boundary of the cubital fossa is formed by brachioradialis?
- Medial boundary
- Superior boundary
- Lateral boundary
- Floor
Q2. Which muscle forms the medial boundary of the cubital fossa opposite brachioradialis?
- Flexor carpi ulnaris
- Anconeus
- Supinator
- Pronator teres
Q3. Which nerve emerges between brachioradialis and brachialis near the lateral side of the elbow?
- Radial nerve
- Anterior interosseous nerve
- Median nerve
- Ulnar nerve
Q4. Which branch of the radial nerve travels deep to brachioradialis in the forearm?
- Anterior interosseous nerve
- Posterior interosseous nerve throughout its entire course
- Superficial branch of the radial nerve
- Deep branch of the ulnar nerve
Q5. Which artery is closely related to the medial border of brachioradialis in much of the forearm?
- Radial artery
- Posterior interosseous artery
- Brachial artery throughout the distal forearm
- Ulnar artery
Q6. Which spinal nerve roots are most commonly associated with brachioradialis?
- C8 and T1
- T1 and T2
- C5 and C6
- C3 and C4
Q7. Why does brachioradialis not produce wrist movement despite extending far down the forearm?
- It inserts into the flexor retinaculum
- It inserts on the ulna
- It inserts proximal to the wrist joint
- It is paralyzed during wrist movement
Q8. Which statement best explains why brachioradialis is unusual among posterior forearm muscles?
- It is median nerve supplied but extends the fingers
- It is ulnar nerve supplied but abducts the thumb
- It is radial nerve supplied but primarily flexes the elbow
- It is radial nerve supplied but flexes the fingers
Q9. How can brachioradialis be tested clinically?
- Resisted finger flexion with the elbow extended
- Resisted elbow flexion with the forearm in neutral
- Resisted wrist extension with full pronation
- Resisted thumb opposition
Q10. Which muscle lies medial to brachioradialis in the floor region of the cubital fossa?
- Brachialis
- Extensor pollicis longus
- Flexor digitorum profundus
- Pronator quadratus