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14 Cards in this Set
- Front
- Back
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Autonomic system |
Involved with everything not motor fxn |
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Autonomic efferent pathway |
Has a central neuron synapse with ganglion neuron |
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Two parts of autonomic system |
Para sympathetic Sympathetic (Both disynaptic) |
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Parasympathetic |
Rest and digest |
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Sympathetic |
Fight/flight Chain ganglion |
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Advantage of chain ganglion? |
-A lot of diversion in the regulation of NS -Fine tune signaling |
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Sympathetic chain ganglion |
(sympathetic trunk) (paravertebral ganglia) 1. Cervical - 3 superior = sympathetic/medial + inferior = parasympathetic) 2. Thoracic - 12 3. Lumbar - 4 4. Sacral - 4 |
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4 neuronal pathways |
1. Same level T1- preganglionic neuron synapse w T1 chain ganglion (trachea) 2. Adjacent level T1- preganglionic neuron travel through chain ganglia until it reaches superior cervical ganglia (largest of the 3 cervical ganglia/the only sympathetic one) 3a. Outside chain ganglia -adrenal medulla: part of adrenal gland 3b. Outside chain ganglia -collateral ganglia (3 types) Celiac, superior mesenteric, interior mesenteric |
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Sympathetic fibers |
- Short preganglionic fibers - long postganglionic fibers - ganglia tend to be located near spinal cord (Long distance between site of ganglia to Target organ) |
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Parasympathetic fibers |
Can activate, not turn off - cranial and sacral regions - long preganglionic fibers - short postganglionic fibers - ganglia located near or within Target organ (where jxn is located) |
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4 Cranial nerve- parasympathetic jxns |
CN 3,7,9 interact with these ganglia 1. Ciliary ganglion: control Iris, cillary body (lense shape) = eye focus/vision manipulation 2. Ptereopalatine: lacriminal glands, nasal mucosa 3. Submandibular: oral muscosa, salivary glands 4. Otic: vasodilator = taste and salvation |
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Which CN targets abdominal targets? |
CN 10 - heart, respiratory, intestines, trachea, etc |
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Sacral nerves |
Lower digestive system and renal (urine production/kidney fxn) |
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How to divide sympathetic and parasympathetic? |
Both: disynaptic Short or long fibers? Where ganglia are coming from? Where jxn is located? Doing opposite things to same structures |
