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  2. Postganglionic nerve fibers - Wikipedia

    en.wikipedia.org/wiki/Postganglionic_nerve_fibers

    The neurotransmitters of postganglionic fibers differ: In the parasympathetic division, neurons are cholinergic.That is to say acetylcholine is the primary neurotransmitter responsible for the communication between neurons on the parasympathetic pathway.

  3. Group C nerve fiber - Wikipedia

    en.wikipedia.org/wiki/Group_C_nerve_fiber

    Group C fibers include postganglionic fibers in the autonomic nervous system (ANS), and nerve fibers at the dorsal roots (IV fiber). These fibers carry sensory information. Damage or injury to nerve fibers causes neuropathic pain. Capsaicin activates C fibre vanilloid receptors, giving chili peppers a hot sensation.

  4. Sympathetic nervous system - Wikipedia

    en.wikipedia.org/wiki/Sympathetic_nervous_system

    There are two kinds of neurons involved in the transmission of any signal through the sympathetic system: pre-ganglionic and post-ganglionic. The shorter preganglionic neurons originate in the thoracolumbar division of the spinal cord specifically at T1 to L2~L3, and travel to a ganglion, often one of the paravertebral ganglia, where they synapse with a postganglionic neuron.

  5. Non-noradrenergic, non-cholinergic transmitter - Wikipedia

    en.wikipedia.org/wiki/Non-noradrenergic,_non...

    gastric nerves & Pelvic Nerve: erection; gastric emptying; NPY: peptide: postganglionic sympathetic neurons (e.g. blood vessels) enhance vasoconstrictor action of noradrenaline; noradrenaline release inhibitor; VIP: peptide: parasympathetic nerves to salivary glands; NANC innervation to smooth muscle of airways

  6. Gray ramus communicans - Wikipedia

    en.wikipedia.org/wiki/Gray_ramus_communicans

    Each spinal nerve receives a branch called a gray ramus communicans (pl.: rami communicantes) from the adjacent paravertebral ganglion of the sympathetic trunk.The gray rami communicantes contain postganglionic nerve fibers of the sympathetic nervous system and are composed of largely unmyelinated neurons.

  7. Sympathetic ganglia - Wikipedia

    en.wikipedia.org/wiki/Sympathetic_ganglia

    The general rule of interaction of the nerve fibers in the sympathetic nervous system begins at the spinal cord. Here they arise from the thoracolumbar (T1–L2) regions' lateral horn of grey and emerge via the ventral root. They enter their respective spinal nerve (e.g. T5), and thus enter the white ramus communicans. This myelinated division ...

  8. Ciliary ganglion - Wikipedia

    en.wikipedia.org/wiki/Ciliary_ganglion

    It is 1–2 mm in diameter and in humans contains approximately 2,500 neurons. [1] The ganglion contains postganglionic parasympathetic neurons. These neurons supply the pupillary sphincter muscle, which constricts the pupil, and the ciliary muscle which contracts to make the lens more convex.

  9. Ganglion - Wikipedia

    en.wikipedia.org/wiki/Ganglion

    Cranial nerve ganglia contain the cell bodies of cranial nerve neurons. Autonomic ganglia contain the cell bodies of autonomic nerves. In the autonomic nervous system, fibers from the central nervous system to the ganglia are known as preganglionic fibers, while those from the ganglia to the effector organ are called postganglionic fibers.