Introduction
The peripheral nerves and contributing spinal nerve roots that contribute to each reflex arc covered in this module are listed below.
| Reflex | Peripheral nerve | Spinal nerve roots |
| Biceps Brachii | Musculocutaneous nerve | C5 C6 |
| Brachioradialis | Radial nerve | C5 C6 C7 |
| Triceps Brachii | Radial nerve | C6 C7 C8 |
| Adductor (brevis and longus) | Obturator nerve | L2 L3 L4 |
| Quadriceps | Femoral nerve | L2 L3 L4 |
| Hamstring (medial) | Tibial part of the Sciatic nerve | L5 S1 |
| Achilles tendon | Tibial nerve | L5 S1 S2 |
Spinal nerve roots identified in bold text represent primary or “key” innervation as they are typically more useful in identifying a nerve root lesion at a particular spinal segment. The correlation of deep tendon reflex examination findings with other neurological examination data will be required to accurately identify a specific level of dysfunction.
