Term
what does the CNS include |
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Definition
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Term
what are the components of the peripherial nervous system |
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Definition
afferent: nerves going to CNS efferent: nerves leaving CNS |
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Term
what is the function of afferent nerves |
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Definition
carry information to CNS for processing autonomic nervous system reflexes: baroreceptor, emotional |
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Term
compare preganglionic and poste ganglinic neuron cell bodies and axons |
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Definition
pre: cell body in CNS, non myelinated
post: cell body in ganglia, non-myelinated, terminates in effector organ |
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Term
function and nerve lay out of somatic NS |
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Definition
vountary control of sksletal muscle one neuron, no ganglia |
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Term
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Definition
involuntary control of heart, vessels visceral organs, glands |
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Term
what are the three types of input into the autonomic NS, explain where each comes from or is processed |
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Definition
afferent sign: travels to integrating center in hpothalamus, medulla, spinal cord
reflexes: dont involve processing (baroreceptor increases symp and decreases para to heart)
emotions; stimulate sympathetic and parasympathetic |
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Term
where do sympathetic preganglionic fibers come from, where do they go |
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Definition
T1-2, L1-5 synapse in sympathetic chain, post ganglionic extend to viscera |
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Term
explain the wiring of the adrenal medulla |
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Definition
recieves sympathetic preganglionic fiber that does not synapse in sympathetic chain and has no postganglionic fiber
instead releases hormones (N/NE) into the blood |
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Term
general function of sympathetic NS |
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Definition
continously active to maintain tone functions as a unit not essential for life fight or flight |
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Term
sympathetic effect on: heart, energy, blood, pupil, lungs, bladder, GU, salivation, GI, muscle |
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Definition
increases HR, BP energy mobilization blood to skin and organs decreased dilation of skeletal muscle vessels dilation of pupil bronchi constriction bronchiole dilation detrusor relaxation construction of trigone and sphinctor thick salivation decrease in gastric motility uterus relaxation ejaculation |
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Term
where do parasympathetic NS fibers come from, where do they go |
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Definition
CN III, VII, IX, X, S2-4 synapse at ganglia near effector organ |
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Term
general functions of parasympathetic NS |
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Definition
essential for life effects specific effector organ rest and digest |
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Term
effect of parasympathetic on: eye, lung, bladder, GU, salivation, heart, GI |
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Definition
constrict iris constricts pupil constriction of ciliary m. for near vision constriction of bronchioles contraction of detrusor relaxing trigone and sphinctor erection watery salivation decreased HR, CO GI motility |
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Term
what are the effects when an organ has parasympathetic and sympathetic innervation |
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Definition
parasympathetic predominates sympathetic only predominates if it is the only innervator |
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Term
where is sympathetic the only innervator |
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Definition
blood vessels, adrenal medulla, pilomotor muscles, sweat glands |
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Term
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Definition
ACh releasing NT binds to cholinergic receptor (Nm, Nn, M) |
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Term
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Definition
NE releasing and NT binds to adrenergic receptor (a and B) |
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Term
what are the two types of parasympathetic receptor/NT combinations, where are they located |
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Definition
preganglionic/postganglionic synapse: ACh/Nn
postganglionic/cardiac, smooth muscle, glands synapse: ACh/M |
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Term
what are the 4 types of sympathetic receptor/NT combinations, where are they located |
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Definition
preganglionic/postganglionic: ACh/Nn
postganglionic/sweat gland synapse: ACh/M
postganglionic/cardiac M, smooth M, gland synapse: NE/a or B
postganglionic / renal vascular smooth muscle synapse: D/D1 (dopamine is precursor for NE, D1 is main periphery dopamine receptor) |
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Term
what is the neuromumoral receptor/NT combination, where is it located |
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Definition
preganglionic/adrenal medulla synapse: ACh/Nm causes release of E and NE into blood |
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Term
what is the somatic receptor/NT synapse, where is it located |
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Definition
somatic/skeletal muscle synapse: ACh/Nm |
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Term
what are the three categories of chemical signalers |
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Definition
local hormones neurotransmitters |
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Term
local signalers: 2 examples, down side |
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Definition
rapidly destoried or removad histamine, prostaglandin |
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Term
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Definition
travel in blood to effect broadly distributed target cells |
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Term
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Definition
communication between neurons acts on specific cellular receptor |
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Term
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Definition
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Term
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Definition
cholinergic neurons in sympathetic, parasympathetic, and adrenal medulla iin all NMJ |
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Term
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Definition
adrenergic neurons, nerve transmission E from adrenal medulla into blood and activates non-adrenergic receptors |
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