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Which nerves contain the most parasympathetic preganglionic fibers a trigeminal b splanchnic c optic d vagus?
D. vagus. this is the largest Cranial nerve, carrying parasympathetic information to much of the body (ie. esophagus, GI tract, heart). parasympathetic fibers, unlike sympathetic fibers, do not synapse until they are pretty much on in or near the organ. So the vagus is made up of preganglionic parasympathetics.
trigeminal contains somatic afferents, and somatic efferents. neither of these are visceral efferents (which could be para or sympathetic).
wikipedia tells you correctly that splanchnic nerves are generally sympathetic autonomics, except for one spot.
optic nerve is carrying Afferent sensory information Away from the eye.
What else can I help you with?
Are sweat glands parasympathetic or sympathetic?
They are sympathetic but an exception - ACh is released as a post-synaptic neurotransmitter rather than Adrenaline/Noradrenaline.Illicitinga parasympathetic response will not stimulate these neurons and therefore sweating is not a parasympathetic side effect.However, as post-synaptic sweat glands contain Muscarinic receptors and not adrenoceptors the administration of a non-selective Muscarinic agonist would result in both a parasympathetic response such as constriction of the pupil or decreased heart rate as well as sweating due to the activation of these sympathetic post-synaptic MAChR in the sweat glands.Atropine would reduce all parasympathetic responses and stop sweating.
Is the glossopharyngeal nerve the only cranial nerve that contains sensory fibers?
No, the glossopharyngeal nerve (CN IX) is not the only cranial nerve that contains sensory fibers. Other cranial nerves, such as the trigeminal nerve (CN V), facial nerve (CN VII), vestibulocochlear nerve (CN VIII), and vagus nerve (CN X), also contain sensory fibers in addition to motor or mixed fibers.
Mixed nerve house?
The mixed nerve house is a term used to describe cranial nerves, such as the trigeminal nerve, that contain both sensory and motor fibers. These nerves perform a combination of functions, including transmitting sensory information like touch and pain sensations as well as controlling muscle movements. The mixed nature of these nerves allows for complex sensory and motor functions to be carried out efficiently.
Do prokaryotes contain a nucleus?
No, prokaryotes do not contain a nucleus.
Do mitochondria contain proteins?
Yes, mitochondria contain proteins.
What cranial nerves does not contain preganglionic parasympathetic fibers?
optic (II)
Which nerves contain the most parasympathetic preganglionic fibers?
ciliary, pterygopalatine, otic, and submandibular.
Does the gray rami communicans contain fibers of a preganglionic or postganglionic neurons?
could be preganglionic
Does the white rami communicans contain fibers of a preganglionic or postganglionic neurons?
Preganglionic because they are myelinated. FALSE
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
Are sweat glands parasympathetic or sympathetic?
They are sympathetic but an exception - ACh is released as a post-synaptic neurotransmitter rather than Adrenaline/Noradrenaline.Illicitinga parasympathetic response will not stimulate these neurons and therefore sweating is not a parasympathetic side effect.However, as post-synaptic sweat glands contain Muscarinic receptors and not adrenoceptors the administration of a non-selective Muscarinic agonist would result in both a parasympathetic response such as constriction of the pupil or decreased heart rate as well as sweating due to the activation of these sympathetic post-synaptic MAChR in the sweat glands.Atropine would reduce all parasympathetic responses and stop sweating.
How many efferent neurons are used in a somatic action potential?
The autonomic reflex contains two. (preganglionic and postganglionic)
What are examples of pungent materials?
Examples of pungent materials include garlic, onions, ginger, mustard, and horseradish. These substances contain volatile compounds that stimulate the trigeminal nerve, leading to a sharp, spicy sensation in the nose and mouth.
Is the glossopharyngeal nerve the only cranial nerve that contains sensory fibers?
No, the glossopharyngeal nerve (CN IX) is not the only cranial nerve that contains sensory fibers. Other cranial nerves, such as the trigeminal nerve (CN V), facial nerve (CN VII), vestibulocochlear nerve (CN VIII), and vagus nerve (CN X), also contain sensory fibers in addition to motor or mixed fibers.
Mixed nerve house?
The mixed nerve house is a term used to describe cranial nerves, such as the trigeminal nerve, that contain both sensory and motor fibers. These nerves perform a combination of functions, including transmitting sensory information like touch and pain sensations as well as controlling muscle movements. The mixed nature of these nerves allows for complex sensory and motor functions to be carried out efficiently.
What do comits contain?
they contain gas and rocks they contain gas and rocks
What part of speech is the word contain?
The word contain is a verb (to contain).
