What is the second neuron in the efferent motor pathway called? Multiple choice question.Postganglionic neuronSensory neuronPreganglionic neuronInterneuron

Understanding the Efferent Motor Pathway

1. Definition of Neuron Types:

   • Preganglionic Neuron: The first neuron in the efferent pathway that originates in the central nervous system (CNS) and synapses with the second neuron.
   • Postganglionic Neuron: The second neuron in the autonomic nervous system that synapses with the effector organ (like muscles or glands).
   • Sensory Neuron: Carries signals from sensory organs to the CNS, not involved in efferent pathways.
   • Interneuron: Neurons that connect other neurons within the CNS, not typically classified in the efferent pathways.

2. Analyzing the Options:

   • The term "second neuron" in the context suggests a focus on the part of the efferent motor pathway that follows the first neuron (preganglionic).
   • The second neuron that arises after the synapse with the first neuron in the autonomic nervous system is referred to as the postganglionic neuron.

Final Answer

The correct answer is Postganglionic neuron.