The knee-jerk reflex is triggered by tapping the patellar tendon, causing the quadriceps to contract and the hamstrings to relax, resulting in leg extension. The sensory neuron directly connects to the motor neuron and, via an interneuron, inhibits the motor neuron to the flexor muscle.
El reflejo rotuliano se desencadena al golpear el tendón rotuliano, causando la contracción del cuádriceps y la relajación de los isquiotibiales, lo que resulta en la extensión de la pierna. La neurona sensorial se conecta directamente con la motora y, a través de una interneurona, inhibe a la neurona motora del músculo flexor.
| Front | Describe the knee-jerk reflex arc. |
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| Back | Knee-jerk reflex:
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