What do all somatic motor neurons release?
Somatic motor neurons activate skeletal muscle fibers at neuromuscular junctions via the neurotransmitter acetylcholine. … Autonomic neural pathways utilize two neurons, a preganglionic neuron and a postganglionic neuron, to reach their effector.
What is the neurotransmitter in motor neurons?
Upon adequate stimulation, the motor neuron releases a flood of acetylcholine (Ach) neurotransmitters from the axon terminals from synaptic vesicles bind with the plasma membrane. The acetylcholine molecules bind to postsynaptic receptors found within the motor end plate.
What neurotransmitter is released by sympathetic motor nerves?
Both the sympathetic and parasympathetic nerves release neurotransmitters, primarily norepinephrine and epinephrine for the sympathetic nervous system, and acetylcholine for the parasympathetic nervous system.
Do somatic motor neurons release norepinephrine?
(2) Somatic motor neurons release the neurotransmitter norepinephrine. (3) The effect of an autonomic motor neuron is either excitation or inhibition, but that of a somatic motor neuron is always excitation.
What is a neurotransmitter quizlet?
Definition of neurotransmitter. A chemical that is released from a nerve cell which thereby transmits an impulse from a nerve cell to another nerve, muscle, organ, or other tissue.