Term
| All postsynaptic neuron cell bodies have what type of receptros |
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Definition
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Term
| This modified SNS neuron has nicotinic recptors for it postsynaptic receptor |
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Definition
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Term
| Sweat glands use what type of receptors |
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Definition
| muscarinic. even though they are sympathetic |
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Term
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Definition
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Term
| majority of SNS neurons lie where |
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Definition
| interomedial cell column (gray horn) |
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Term
| These two diseases destroy pre synaptic SNS neurons |
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Definition
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Term
| where can the pre synaptic PSNS neurons be found? |
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Definition
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Term
| what is the major pathway for connecting the hypothalamus to the spinal ANS |
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Definition
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Term
| what is the function of the brainstem reticular formation? |
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Definition
| they receive afferents from the hypothalamus and spinal cord |
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Term
| How can SNS cause both smooth m. contract and relax? |
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Definition
it inhibits the PSNS from initiating detrusor contraction
it causes constrictions of the internal urethral sphincter |
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Term
| what specifically inhibits the psns? |
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Definition
| the postganglionic SNS inhibits PRE gang PSNS via ALPHA 2 receptors |
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Term
| Specifically, how does the SNS inhibit the detrusor muscle |
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Definition
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Term
| How does the SNS constrict the internal urethral sphincter? |
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Definition
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Term
| What center inhibits the SNS to release inhibition on the Int. ur sphincter and activate the PNS |
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Definition
| Pontine micturition center |
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Term
| higher brain centers inhibit somatic neurons where? and to do what? |
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Definition
Onuf's nucleus (s2-4)
inhibit contraction of external urethral sphincter |
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Term
| what happens to the bladder upon injury ABOVE the pons? |
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Definition
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Term
| How does someone have a spastic bladder? |
|
Definition
UMN lesion above sacral segments
No control over external urethral sphincter |
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Term
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Definition
| LMN at sacral level or cauda equina level no afferent or efferent sent to bladder |
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Term
| This system controls emission? |
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Definition
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Term
| this controls ejaculation |
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Definition
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Term
| what type of erections occur if injury is above lumbar levels? |
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Definition
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Term
| where is the ejaculation center in the spinal cord? |
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Definition
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Term
| This inhibits psychogenic erections |
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Definition
| disruption of CNS afferents |
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Term
| Bilateral lesions of the prefrontal cortex or ant. cingulate gyrus causes what? |
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Definition
| incontinence of bladders and bowels |
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