What is the patellar tendon reflex? The patellar tendon reflex (PSR) or “knee-cap reflex” is a reflex of its own that is frequently used in everyday clinical practice. This reflex is triggered by a light blow with the reflex hammer on the ligamentum patellae, a broad and strong ligament just below the patella, which represents … Patellar Tendon Reflex
Segments of the spinal column In humans, the sensitive neurons (afferences) move to the lumbar segments (lumbar vertebrae) L2-L4, in smaller animals to L3-L6. There the excitation is switched to the motor neurons (efferences) via one synapse each. These neurons pass through the plexus lumbalis and back to the muscle in the femoral nerve, where … Segments of the spinal column | Patellar Tendon Reflex
