preganglionic fibers
preganglionic fibres

This first set of fibers are the preganglionic fibers.

Thinking about things like preganglionic fibers or postganglionic nerves right now only makes me want to weep.

Generally, they are the preganglionic fibers of the autonomic nervous system and have a low conduction velocity.

Preganglionic fibers and postganglionic nerves aren't anything alike.

This is due to the number of synapses formed by the preganglionic fibers with ganglionic neurons.

The remaining preganglionic fibers continue as the mixed facial nerve proper as it extends through the facial canal.

In some cases, the ganglia separating the preganglionic fibers from the postganglionic fibers are actually located within the organ the nerve is servicing.

In the autonomic nervous system, fibers from the CNS to the ganglion are known as preganglionic fibers.

In particular, they are modified postganglionic cells of the Autonomic nervous system that have lost their axons and dendrites, receiving innervation from corresponding preganglionic fibers.

The preganglionic fibers of the sympathetic division end at the sympathetic trunks or at the prevertebral ganglia, so these fibers are quite short.

It extends from the first thoracic through the second lumbar segment, and contains the autonomic motor neurons that give rise to the preganglionic fibers of the sympathetic system.

Here, the preganglionic fibers of the chorda tympani synapse with postganglionic fibers which go on to innervate the submandibular and sublingual salivary glands.

The preganglionic fibers that innervate the SCG are the thoracic spinal nerves, which extend from the T1-T8 region of the ciliospinal center .

Another exception is the sympathetic innervation of the medulla of the adrenal glands, which is accomplished by preganglionic fibers, and subsequently uses acetylcholine as a neurotransmitter.

After joining the lingual nerve, the preganglionic fibers synapse at the submandibular ganglion and send postganglionic fibers to the sublingual and submandibular salivary glands.

To carry out its part of this response, the adrenal medulla receives input from the sympathetic nervous system through preganglionic fibers originating in the thoracic spinal cord from T5-T11.

The parasympathetic nerve fibers, on the contrary, travel to ganglia within the organ they are aiming at; as a result, the preganglionic fibers are quite long and the postganglionic fibers very short.

The splanchnic nerves (splank'nik; "viscera" G), which originate from some of the thoracic nerves, have their preganglionic fibers ending in a mass of ganglia (a "plexus") lying j'ust behind the stomach.

The cell bodies of the preganglionic fibers, the first neuron of this two neuron chain, are located in the intermediolateral cell column (IMLCC) of the thoracic spinal cord.

The preganglionic fibers depart CN IX as the tympanic nerve and continue to the middle ear where they make up a tympanic plexus on the cochlear promontory of the mesotympanum.

All preganglionic fibers, whether they are in the sympathetic division or in the parasympathetic division, are both cholinergic (that is, these fibers use acetylcholine as their neurotransmitter) and either unmyelinated or myelinated.

Sympathetic preganglionic fibers tend to be shorter than parasympathetic preganglionic fibers because sympathetic ganglia are often closer to the spinal cord than are the parasympathetic ganglia.

A. Preganglionic Parasympathetic fibers (Preganglionic fibers) - These fibers have their cell bodies located in the dorsal motor nucleus of the vagus and they will synapse on the terminal ganglia in the walls of the esophagus.

Exiting the plexus within the lesser petrosal nerve, these preganglionic fibers synapse with cells in the otic ganglion, which send postganglionic fibers into the mandibular division of the trigeminal nerve, then into the auriculotemporal nerve, finally reaching their target, the parotid gland.

The preganglionic fibers originate within the CNS in the superior salivatory nucleus and leave as the intermediate nerve (which some consider a separate cranial nerve altogether) to connect with the facial nerve just distal (further out) to it surfacing the CNS.