ACH
Sympathetic preganglionic.
sympathetic preganglionic axon parasympathetic preganglionic axon parasympathetic postganglionic axon
sympathetic
Sympathetic. Parasympathetic secretes thin saliva rich in amylase.
pituitary gland
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.
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.
Short preganglionic axons are characteristic of the sympathetic nervous system. In the sympathetic division, these axons originate in the spinal cord and project to nearby ganglia, which are typically located close to the spinal cord. In contrast, the parasympathetic nervous system features long preganglionic axons that extend from the brainstem or sacral spinal cord to ganglia located near or within target organs.
The parasympathetic nervous system has long preganglionic and short postganglionic fibers
Sympathetic stimulation of the eye will cause dilation of the pupil (mydriasis) and relaxation of the ciliary muscle for far vision.
Preganglionic sympathetic axons leave the spinal cord throughout the thoracic spine and the upper lumber spine (T1-L2).These preganglionic sympathetic axons exit the spinal canal within the anterior primary ramus and then quickly separate to travel via the white ramus communicans to the ipsilateral sympathetic trunk.
No, hormones from the adrenal medulla are released in response to sympathetic stimulation, not vagal stimulation. The adrenal medulla is innervated by sympathetic preganglionic neurons which release acetylcholine, activating the release of epinephrine and norepinephrine from the adrenal medulla.