This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Which is not a part of lower motor neuron: 
Select and explain. 
A. Anterior nerve root, B. Peripheral nerve, C. Peripheral ganglia, D. Anterior horn cell
C: Peripheral ganglia
Answer: C: Peripheral ganglia 
Explanation: Lower motor neurons are motor neurons located in either the anterior grey column, anterior nerve roots or the cranial nerve nuclei of the brainstem and cranial nerves with motor function Lower motor neurons are classified based on the type of muscle fiber they innervate:
Alpha motor neurons innervate extrafusal muscle fibers, the most numerous type of muscle fiber and the one involved in muscle contraction.
Beta motor neurons innervate intrafusal fibers of muscle spindles with collaterals to extrafusal fibers
Gamma motor neurons innervate intrafusal muscle fibers, which together with sensory afferents compose muscle spindles. These are part of the system for sensing proprioception