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29 Cards in this Set
- Front
- Back
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What do autonomic motor neurons innervate? |
Smooth muscle, cardiac muscle, many glands |
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What are the divisions of the autonomic nervous system? |
Sympathetic and parasympathetic |
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Homeostasis |
Maintenance of a dynamically stable state within a system by means of internal regulatory processes that counteract external disturbances of the equilibrium |
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Parasympathetic |
Rest and digest |
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Sympathetic |
Fight or flight |
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How many neurons in an ANS pathway? |
2 neurons - preganglionic neuron in CNS, postganglionic neuron that synapses in viscera |
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How many neurons in an SNS pathway? |
1 neuron |
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Ach is a neurotransmitter in: |
SNS Pre and postganglionic parasympathetic Preganglionic sympathetic |
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NEis a neurotransmitter in: |
Postganglionic sympathetic (except sweat glands)` |
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ANS is (slow/fast) |
Autonomic is slow |
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SNS is (slow/fast) |
Somatic is fast |
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What is the source of sympathetic fibers in the head? |
Superior Cervical Ganglia (SCG) T1-T6 |
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Where are preganglionic neurons in the parasympathetic NS? |
Close to viscera |
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Where are preganglionic neurons in the sympathetic NS? |
Close to spine |
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Where are ganglia in the sympathetic NS? |
Near vertebrae, sympathetic chain ganglia or collateral ganglia |
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Where are ganglia in the parasympathetic NS? |
In or close to visceral target |
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Sympathetic NS preganglionic fibers are _____, and postganglionic fibers are _____ |
Pre: short (close to spine) - get there fast! it's fight or flight! Post: long |
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Parasympathetic NS preganglionic fibers are _____, and postganglionic fibers are _____ |
Pre: long (all the way to target) - lazy, because it's rest and digest Post: short |
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What 3 parts fo the CNS contribute the most to autonomic function? |
Brain stem Spinal cord Hypothalamus |
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Horner's Syndrome |
Damage to SCG or fibers leading from SCG to face Loss of innervation to sweat glands, tarsal muscle of the eyelid, pupillary dilator, blood vessels |
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What part of the diencephalon controls the ANS? |
Hypothalamus |
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How does the hypothalamus communicate with the rest of the nervous system or the body? |
Hypothalamus secretes hormones to pituitary gland, which then secretes more hormones that target organs |
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What are the main functions of the hypothalamus? (4) |
The 4 F's Fight, flight, feed, f*** [mate] |
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Give a function of the preoptic area (medial or lateral) |
MPOA - male sexual behavior, parental behavior LPOA - thermoregulation both - behavioral (panting), autonomic head dissipation, vasodilation, sweating |
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Give a function of the supraoptic nucleus |
regulate water balance, produce ADH, oxytocin (same as paraventricular) |
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Which cranial nerves have a parasympathetic component? |
CN III, VII, IX, X 3, 7, 9, 10 3x3 = 9, 7+3=10 |
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Give a function of the paraventricular nucleus |
regulate water balance, produce ADH, oxytocin (same as supraoptic) |
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Give a function of the suprachiasmic nucleus |
mediates circadian rhythms, secretion of melatonin |
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Give a function of the mammillary area |
part of the limbic system, destruction leads to anterograde amnesia |
