Completar frases The Patellar ReflexVersión en línea Complete the paragraph to explain why the patellar reflex is involuntary and immediate. por Sara Beck-Pancer 1 motor synapses brain communicates involuntary contract sensory not INSTRUCTIONS : Click on the words IN THE CORRECT ORDER to complete the paragraph . In a simple reflex , the sensory neuron directly on the motor neuron in the spinal cord . The neuron directly with the neuron , which causes the muscle to . The sensory signal does not have to travel all the way to the , and the motor signal is generated in the brain . All the action happens right in the spinal cord , which is why the reflex is and immediate .
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