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No. The myocardium.
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What are sympathetic nerve paths?
You have sympathetic nerve trunks located on either side of the vertebral column. You get the sympathetic nerve supply from there.
Are nerve fibers in ascending tracts myelinated?
If I was paying attention in med school, I think... The pre-ganglionic fibers are myelinated and the post-ganglionic are unmyelinated. This is in reference to the sympathetic and parasympathetic systems.
Which autonomic motor fibers are carried by the vagus nerve?
Vagus nerve carries parasynpathetic nerve fibers .
Are efferent nerve fibers described as motor nerve fibers?
Yes.
Does coronary vessels have both parasympathetic and sympathetic innervation?
Yes. Sympathetic nerve stimulation dilates the blood vessels. Parasympathetic nerve stimulation constricts the blood vessels. The sympathetic nerve stimulation effect is more pronounced.
What nerves innervate the heart?
vagus nerve and sympathetic fibers
Is mydriasis parasympathetic or sympathetic?
the parasympathetic fibers of the cranial nerve number three.
Are most innervated blood vessels receive only sympathetic nerve fibers?
Most of the viscera get nerve supply from both sympathetic and parasympathetic systems.
The nerve fibers that stimulate secretions from cells of the adrenal medulla are best described as?
sympathetic
Which division of the autonomic nervous system is involved in secreting norepinephrine via adrenergic nerve fibers?
Sympathetic nervous system .
Which sympathetic fibers form the splanchnic nerve?
Those that pass through the trunk ganglion to synapse in collateral or prevertebral ganglia
Does the white rami communicans contain fibers of a preganglionic or postganglionic neurons?
Preganglionic because they are myelinated. FALSE
Where do epidural opioids work?
The anesthetic agents that are infused through the small catheter block spinal nerve roots in the epidural space and the sympathetic nerve fibers adjacent to them.
What are sympathetic nerve paths?
You have sympathetic nerve trunks located on either side of the vertebral column. You get the sympathetic nerve supply from there.
Are nerve fibers in ascending tracts myelinated?
If I was paying attention in med school, I think... The pre-ganglionic fibers are myelinated and the post-ganglionic are unmyelinated. This is in reference to the sympathetic and parasympathetic systems.
Do the white communicating rami contain myelinated preganglionic sympathetic nerve fibers and are present in all apinal nerves?
Yes and No. White communicating rami contain mylinated preganglionic sympathetic nerve fibers, but are only present at the levels of spinal cord segments T1-L2 (where the cell bodies for these nerve fibers exist in the lateral horn of the spinal cord). Although the sympathetic fibers only arise in the T1-L2 spinal cord segments, they are dispersed to all spinal nerves by traveling through the sympathetic chain. The preganglionic sympathetic fibers will enter the sympathetic chain thru whit rami communicans and then do one of 4 things: 1. synapse with a postganglionic cell body in the sympathetic chain at the level it enters 2. ascend within the chain to synapse 3. descend within the chain to synapse 4. splanchnic nerves leave the chain without synapsing and synapse closer to the organ they innervate.There are, however, GRAY rami communicans for all spinal nerves.I hope that helps
Do all visceral motor neurons synapse in a sympathetic ganglion?
No; some axons synapse in nearby autonomic ganglion. postganglionic fibers travel along either sympathetic nerves or rejoin at the spinal nerve.
