WVSOM -- medical neuroanatomy -- autonomic nervous system
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| What is the target of autonomics? | smooth/cardiac muscle and glands
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| Describe the autonomic neuron pathway. | 2 neuron pathway. Neuron 1 is preganglionic with soma in CNS and Neuron 2 is post-ganglionic with soma in the autonomic ganglia
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| Describe the myelination of autonomic nerves | preganglionics are lightly myelinated and post ganglionics are unmyelinated
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| What is the preganglionic neurotransmitter for sympathetic nervous system | acetylcholine
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| What is the postganglionic neurotransmitter for the sympathetic nervous system? | norepi
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| Where do sympathetic neurons travel? | intermediate zone of grey matter in cord
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| What is post ganglionic neurotransmitter for parasympathetic? | acetylcholine
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| what is pre ganglionic neurotranmistter for parasympaththetic? | acetylcholine
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| What is the principal structure for organizing center for ANS activity? | hypothalamus
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| How do sympathetics travel from the hypothalamus? | conneccted to autonomic nuclei and gray matter by axons travellign from Medial hypothalamic nuclei thru dorsal longitudinal fasciculus
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| What ganglia does the occulomotor nerve travel to? | ciliary ganglion
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| What do post-ganglionics from the ciliary ganglion effect? | the eye
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| What ganglion does the facial nerve go to? | pterygopalatine and submandibular ganglion
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| What does the submandimbular and pterygopalatine ganglion effect? | submandibular/sublingual salivary glands and lacrimal glands
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| What ganglion does the glossopharyngeal nerve go to? | otic ganglion
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| What does the otic ganglion effect? | parotid salivary gland
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| Where does the preganglionics of the vagus synapse? | walls of target organs
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| What does the vagus nerve effect? | heart, lungs, bronchi, aorta, liver, gall bladder, stomach, small intestine, proximal portions of the large intestine
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| What is the sacral outflow? | s2-s4 segments of the spinal cord
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| What does the sacral outflow effect? | large intestine, urinary bladder and reporductive organs
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| describe the parasympathetic pathway | preganglionic neurons located in cranial nerve nuclei III, VII, IX and X as well as sacral segments. they travel to the target organ where postganglics then finish the path to teh target on very short post ganglionics
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| Describe the path of the sympathetic nerves | IML > white ramus > chain/ganglia via splanchnics > grey ramus > target organ
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| What are the three sympathetic ganglia in teh abdomen? | celiac ganglion, superior mesenteric ganglion and inferior mesenteric ganglion
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| Where are sympathetihc post-ganglionic neurons located? | sympathetic chain, three ganglia in abdomen and adrenal medulla
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