The biceps reflex primarily tests which nerve root level?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the Palmer PNLE Test. Explore flashcards and multiple choice questions with comprehensive explanations and hints. Elevate your readiness.

Multiple Choice

The biceps reflex primarily tests which nerve root level?

Explanation:
The biceps reflex tests the spinal segments that control elbow flexion via the musculocutaneous nerve, which carries fibers from C5 and C6. When the biceps tendon is tapped, the stretch activates the muscle spindle, sending a signal through the musculocutaneous nerve to the spinal cord at these levels. An alpha motor neuron then fires, causing the biceps to contract and the elbow to flex. So, abnormalities point to dysfunction at C5–C6. For context, the triceps reflex involves C7–C8, the knee-jerk involves L4, and the ankle reflex involves S1–S2.

The biceps reflex tests the spinal segments that control elbow flexion via the musculocutaneous nerve, which carries fibers from C5 and C6. When the biceps tendon is tapped, the stretch activates the muscle spindle, sending a signal through the musculocutaneous nerve to the spinal cord at these levels. An alpha motor neuron then fires, causing the biceps to contract and the elbow to flex. So, abnormalities point to dysfunction at C5–C6. For context, the triceps reflex involves C7–C8, the knee-jerk involves L4, and the ankle reflex involves S1–S2.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy