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What are the differences between preganglionic and postganglionic neurons?
Wiki User
∙ 12y ago
You have a really good question. Studying the nervous system can be overwhelming and quit confusing. Preganglionic Neurons come from the CNS to the Ganglion ( mass of neuron cell bodies and dendrites) and Postganglionic neurons leave the ganglion and head toward the effector organ ( smooth muscle, glands, etc..).
Wiki User
∙ 12y ago
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Does the gray rami communicans contain fibers of a preganglionic or postganglionic neurons?
could be preganglionic
When a preganglionic neuron innervates several postganglionic neurons it is called what?
divergence
Which nervous system subdivision is a chain of two motor neurons consisting of a preganglionic and a postganglionic neuron?
autonomic
Does the white rami communicans contain fibers of a preganglionic or postganglionic neurons?
Preganglionic because they are myelinated. FALSE
What neurotranmitters are released by smpathetic and parasympthetic neurons?
The 2 divisions of the autonomic nervous system (sympathetic and parasympathetic) both have 2 areas where neurotransmitter is released. ?They have ganglionic synapses in the periphery wherein neurotransmitter is released and have synapses on the target organs wherein neurotransmitter is released. ?So this means there is preganglionic and postganglionic release of neurotransmitter.Sympathetic preganglionic neurotransmitter is Acetylcholine. ?Acetylcholine affects muscarinic receptors here.Sympathetic postganglionic neurotransmitter is Norepinephrine. ?Norepinephrine affects alpha or beta receptors here. ?Parasympathetic preganglionic neurotransmitter is Acetylcholine. ? Acetylcholine affects muscarinic receptors here.Parasympathetic postganglionic neurotransmitter is Acetylcholine. ?In this case Acetylcholine affects muscarinic receptors.?Sympathetic neurons are considered to be adrenergic & sympathetic neurons are considered to be cholinergic.
How many efferent neurons are used in a somatic action potential?
The autonomic reflex contains two. (preganglionic and postganglionic)
Which autonomic neurons release norepinephrine as a neurotransmitte?
Sympathetic postganglionic neurons release norepinephrine,
Where do Preganglionic neurons develop from?
Neural crest cells
Are preganglionic neurons made up of adrenergic fibers?
yes
Which division of the nervous system has short preganglionic neurons?
sympathetic
Is acetylcholine the substance released by the axon terminals of both somatic motor neurons and postganglionic parasympathetic neurons?
True
Which spinal region lacks autonomic preganglionic neurons?
Cervical Region
