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  2. Preganglionic nerve fibers - Wikipedia

    en.wikipedia.org/wiki/Preganglionic_nerve_fibers

    Another major difference between the two ANS (autonomic nervous systems) is divergence. Whereas in the parasympathetic division there is a divergence factor of roughly 1:4, in the sympathetic division there can be a divergence of up to 1:20. This is due to the number of synapses formed by the preganglionic fibers with ganglionic neurons.

  3. Ganglion - Wikipedia

    en.wikipedia.org/wiki/Ganglion

    A dorsal root ganglion (DRG) from a chicken embryo (around stage of day 7) after incubation overnight in NGF growth medium stained with anti-neurofilament antibody. Note the axons growing out of the ganglion. A ganglion (pl.: ganglia) is a group of neuron cell bodies in the peripheral nervous system.

  4. Ganglion cell - Wikipedia

    en.wikipedia.org/wiki/Ganglion_cell

    Examples of ganglion cells include: Retinal ganglion cell (RGC) found in the ganglion cell layer of the retina [1] Cells that reside in the adrenal medulla, where they are involved in the sympathetic nervous system's release of epinephrine and norepinephrine into the blood stream; Cells of the sympathetic ganglia; Cells of the parasympathetic ...

  5. Autonomic ganglion - Wikipedia

    en.wikipedia.org/wiki/Autonomic_ganglion

    An autonomic ganglion is a cluster of nerve cell bodies (a ganglion) in the autonomic nervous system. The two types are the sympathetic ganglion and the parasympathetic ganglion . [ 1 ] [ 2 ]

  6. Submandibular ganglion - Wikipedia

    en.wikipedia.org/wiki/Submandibular_ganglion

    The submandibular ganglion is small and fusiform in shape. It is situated above the deep portion of the submandibular gland, on the hyoglossus muscle, near the posterior border of the mylohyoid muscle. The ganglion 'hangs' by two nerve filaments from the lower border of the lingual nerve (itself a branch of the mandibular nerve, CN V 3). It is ...

  7. Myenteric plexus - Wikipedia

    en.wikipedia.org/wiki/Myenteric_plexus

    The myenteric plexus (or Auerbach's plexus) provides motor innervation to both layers of the muscular layer of the gut, having both parasympathetic and sympathetic input (although present ganglion cell bodies belong to parasympathetic innervation, fibers from sympathetic innervation also reach the plexus), whereas the submucous plexus provides secretomotor innervation to the mucosa nearest the ...

  8. Group C nerve fiber - Wikipedia

    en.wikipedia.org/wiki/Group_C_nerve_fiber

    The C group fibers are unmyelinated and have a small diameter and low conduction velocity, whereas Groups A and B are myelinated. 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.

  9. Group A nerve fiber - Wikipedia

    en.wikipedia.org/wiki/Group_A_nerve_fiber

    Group A nerve fibers are one of the three classes of nerve fiber as generally classified by Erlanger and Gasser. The other two classes are the group B nerve fibers , and the group C nerve fibers . Group A are heavily myelinated , group B are moderately myelinated , and group C are unmyelinated.