GENERAL HISTOLOGY

Detailed explanation-1: -Alpha motor neurons (also called lower motor neurons) innervate skeletal muscle and cause the muscle contractions that generate movement. Motor neurons release the neurotransmitter acetylcholine at a synapse called the neuromuscular junction.

Detailed explanation-2: -Efferent neurons, also called motor neurons, are the nerve fibers responsible for carrying signals from the brain to the peripheral nervous system in order to initiate an action. In other words, they are the neurons that tell your body to perform an action, such as removing your hand from a hot pan.

Detailed explanation-3: -motor unit is a motor neuron plus all the skeletal muscle fibers it stimulates. Motor units are therefore the most basic unit of a skeletal muscle and are what causes a contraction.