Preganglionic fibers of the autonomic nervous system typically run from the central nervous system to an autonomic ganglion outside the central nervous system, where they synapse with postganglionic neurons. These fibers are part of the efferent pathway that transmits signals from the central nervous system to the peripheral organs and tissues.
The preganglionic fibers of the autonomic nervous system travel through the cranial nerves (in the head) and the spinal nerves (in the rest of the body). They synapse with postganglionic neurons in autonomic ganglia before reaching their target organs.
The nerve types in order from slowest conduction velocity to fastest are: C fibers (slow pain and temperature) B fibers (preganglionic autonomic) Aδ fibers (fast pain and temperature) Aβ fibers (touch and pressure) Aα fibers (motor neurons)
Preganglionic fibers of the parasympathetic division of the autonomic nervous system synapse with postganglionic neurons in the ganglia located near or within their target organs. This allows for the transmission of nerve impulses from the central nervous system to the specific organs to regulate functions like digestion, salivation, and smooth muscle contraction.
No, white rami are not exclusive to the sympathetic division of the autonomic nervous system (ANS). While they are primarily associated with the sympathetic division, specifically as pathways for preganglionic sympathetic fibers to enter the sympathetic ganglia, similar structures exist in the parasympathetic division. However, the term "white rami" typically refers to the myelinated preganglionic fibers of the sympathetic system.
Yes, sympathetic fibers leave the central nervous system at the thoracolumbar region, specifically from the intermediolateral cell column of the spinal cord. These fibers then form the sympathetic trunk and travel to the target organs to regulate the body's fight-or-flight response.
could be preganglionic
Preganglionic because they are myelinated. FALSE
Sympathetic preganglionic.
The parasympathetic nervous system has long preganglionic and short postganglionic fibers
yes
optic (II)
yes
The preganglionic fibers of the autonomic nervous system travel through the cranial nerves (in the head) and the spinal nerves (in the rest of the body). They synapse with postganglionic neurons in autonomic ganglia before reaching their target organs.
ciliary, pterygopalatine, otic, and submandibular.
Preganglionic parasympathetic fibers. In the Parasympathetic division, the preganglionic axons leave the ventral roots of the spinal cord and collectively form the pelvic splanchnic nerves.
brain stem and the sacral region of the cord
Preganglionic sympathetic fibers trigger the release of acetylcholine at the synapse with postganglionic neurons in the sympathetic ganglia. This neurotransmitter binds to nicotinic acetylcholine receptors on the postganglionic neuron, which then propagate the signal to release norepinephrine at the target tissue.