Which is the major type of neuron in the body that includes the spinal motor neurons? Pseudounipolar. Multipolar. Bipolar. Unipolar.

Identifying the Major Type of Neuron

1. Understanding Neuron Types: Neurons can be classified based on their structure, specifically the number of processes extending from their cell body. The main types are:

   • Unipolar: A single process that branches into two, often found in sensory neurons.
   • Bipolar: Two processes, typically seen in sensory pathways (e.g., retina).
   • Multipolar: Multiple processes (one axon and many dendrites), commonly found in the central nervous system.
   • Pseudounipolar: Appears as a single process but branches into two, primarily associated with sensory neurons.

2. Relevance to Spinal Motor Neurons: Spinal motor neurons are responsible for transmitting signals from the spinal cord to muscles. They typically have a single axon that projects out to muscles with many dendrites receiving signals.

3. Conclusion: Spinal motor neurons are classified as Multipolar neurons because they have a single axon and multiple dendrites, which is characteristic of motor neurons.

Final Answer

The major type of neuron in the body that includes the spinal motor neurons is Multipolar.