Information from the brain and spinal cord to the muscles
is sent through somatic motor neurons, thus enabling the body to move.
A motor neuron or motoneuron is a neuron whose cell
body is located in the CNS-Central
Nervous System (brain or the spinal
cord), and whose axon (fiber) directly or indirectly control effector
organs, like muscles and glands.
Motoneuron is a part of PNS-Peripheral Nervous System which is serving as a relay between the brain
and spinal cord and the rest of the body. Motoneurons are also called efferent neurons to indicate the flow of information
from the CNS to the periphery. The axon of motoneuron forms a neuromuscular
junction with the effectors (muscles). A neuromuscular junction allows motoneuron
to transmit a signal to the muscle fiber, causing muscle contraction. Motoneurons
release acetylcholine (ACh) as neurotransmiter.
