A lower motor neuron (LMN) is a type of nerve cell that directly connects the spinal cord to muscles, facilitating movement. These neurons transmit signals from the central nervous system to skeletal muscles, enabling voluntary actions like walking and grasping. When lower motor neurons are damaged, it can lead to muscle weakness, atrophy, or paralysis. Conditions such as amyotrophic lateral sclerosis (ALS) and poliomyelitis can affect these neurons, resulting in significant motor function impairment. Understanding LMNs is crucial for diagnosing and treating various neuromuscular disorders.