Nonepinephrine and acetylcholine
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The two main neurotransmitters released by the axon terminals of autonomic neurons are acetylcholine and norepinephrine. Acetylcholine is predominantly released by parasympathetic neurons, while norepinephrine is released by sympathetic neurons.
Neurons release neurotransmitters, not neuroglia. Neuroglia, also known as glial cells, primarily support and protect neurons in various ways, but they do not release neurotransmitters like neurons do.
An axon sends signal from dendrites to terminals to release neurotransmitters
The tiny branches at the end of a motor neuron are called axon terminals or synaptic terminals. They are responsible for transmitting signals to target cells, such as muscle cells or other neurons, through the release of neurotransmitters at synaptic connections.
Axons are long, slender projections of neurons that carry signals away from the cell body. Vesicles store neurotransmitters at the end of axons in knoblike terminals called axon terminals. When an action potential reaches the axon terminal, it triggers the release of neurotransmitters into the synapse to communicate with other neurons or target cells.
The part of the neuron where neurotransmitters are released from is the axon terminal, and they are released into a small space between neurons called the Synapse.