postganglionic neuron
Quick Summary
A postganglionic neuron is a nerve fiber that extends from an autonomic ganglion to an organ or tissue. It is the second neuron in a two-neuron pathway of the autonomic nervous system, with the first being the preganglionic neuron.12
The parasympathetic nervous system, which regulates visceral organs, uses both preganglionic and postganglionic neurons. These neurons secrete acetylcholine as a neurotransmitter. Parasympathetic ganglia are typically located close to or within the organs they innervate. In contrast, sympathetic ganglia are found at more distant sites.32
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human nervous systemThe autonomic nervous system…set, called ganglion cells or postganglionic neurons, lies outside the central nervous system in collections of nerve cells called autonomic ganglia. Parasympathetic ganglia tend to lie close to or within the organs or tissues that their neurons innervate, whereas sympathetic ganglia are located at more distant sites from their target…
Read More…set, called ganglion cells or postganglionic neurons, lies outside the central nervous system in collections of nerve cells called autonomic ganglia. Parasympathetic ganglia tend to lie close to or within the organs or tissues that their neurons innervate, whereas sympathetic ganglia are located at more distant sites from their target…
Read More- human nervous systemNeurotransmitters and receptors
… as a neurotransmitter, whereas most postganglionic neurons utilize norepinephrine (noradrenaline)—with the major exception that postganglionic neurons innervating sweat glands use acetylcholine. On closer inspection, however, neurotransmission is seen to be more complex, because multiple chemicals are released, and each functions as a specific chemical code affecting different receptors on the…
Read More… as a neurotransmitter, whereas most postganglionic neurons utilize norepinephrine (noradrenaline)—with the major exception that postganglionic neurons innervating sweat glands use acetylcholine. On closer inspection, however, neurotransmission is seen to be more complex, because multiple chemicals are released, and each functions as a specific chemical code affecting different receptors on the…
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