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Andrenergic fibers release Norepinephrine and Cholinergic fibers release Acetylcholine.

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13y ago

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Truefalse norephrine releasing fibers are called adrenergic fibers?

yes , true! sympathetic nervous system releases norepinephrine,epinephrine, dopamine neurotransmitters which stimulate adrenegic fibers and produce "fight or flight" so that you can fight that bear!


What secretes norepinephrine adrenergic fibers?

Norepinephrine is mainly secreted by the adrenal medulla and the postganglionic fibers of the sympathetic nervous system, which are also known as adrenergic fibers. These fibers release norepinephrine in response to stress or arousal, helping to initiate the body's fight or flight response.


This enzyme breaks down norepinephrine in nerve fibers?

The enzyme responsible for breaking down norepinephrine in nerve fibers is called monoamine oxidase (MAO). It degrades norepinephrine into its metabolites to regulate neurotransmission and maintain balance in the nervous system.


Are parasympathetic postganglionic fibers generally come from adrenergic fibers?

No, parasympathetic postganglionic fibers do not come from adrenergic fibers. Parasympathetic postganglionic fibers release acetylcholine as their neurotransmitter, whereas adrenergic fibers release norepinephrine.


Preganglionic sympathetic fibers trigger the release of?

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.


Does post ganglionic fibers release epinephrine?

No, postganglionic fibers release norepinephrine, not epinephrine. Epinephrine is released by the adrenal medulla.


What fibers are the sweat glands innervated by?

Sweat glands are innervated by adrenergic sympathetic nerve fibers from the autonomic nervous system. These fibers release norepinephrine, which stimulates the sweat glands to produce sweat.


All of these neurons release acetylcholine as a neurotransmitter except?

specific cardiac and smooth muscle fibers


Which division of the autonomic nervous system is involved in secreting norepinephrine via adrenergic nerve fibers?

Sympathetic nervous system .


The neurons that secrete norepinephrine is called?

adrenel medulla


Does the sympathetic division secrete norepinephrine?

Yes, when stimulated the sympathetic postganglionic fibers release norepinepherine (20%) and epinepherine (80%).


What are long fibers called?

Muscle cells are called fibers.