Final answer:
A lesion on the lower motor neuron can lead to flaccid paralysis and paresis, resulting in a decrease in muscle control and tone. This is different from upper motor neuron lesions, which exhibit spasticity. LMN lesions can be caused by various factors such as injuries, diseases, or age-related muscle loss.
Step-by-step explanation:
A lesion on the lower motor neuron (LMN) can result in a condition called paresis, which causes paralysis or partial loss of muscle control. This paralysis is referred to as flaccid paralysis and is characterized by a decrease in muscle tone. LMN lesions can occur due to a variety of factors, such as injuries, diseases, or age-related muscle loss. The loss of muscle control in LMN lesions is different from upper motor neuron (UMN) lesions, where tone is retained and spasticity is observed.