Unit 5 - ANS Flashcards
the axon terminals of all preganglionic neurons release the chemical _______, which transmits impulses across the autonomic synapses.
acetylcholine
The axon terminals of almost all _______ neurons release acetylcholine into their synaptic junctions.
postganglionic parasympathetic
_________ axon terminals are the only axon terminals to release norepinephrine.
postganglionic sympathetic
axons whose terminals release _______ are called cholinergic fibers
acetylcholine
axons whose terminals release acetylcholine are called what?
cholinergic fibers
______ are axon fibers that release chiefly N. epinephrine
adrenergic fibers
adrenergic fibers are axons that release chiefly _____.
N. epinephrine
all preganglionic fibers and all parasympathetic postganglionic fibers are classified as ________ fibers.
cholinergic
postganglionic sympathetic fibers are the only fibers known definitely to be ________
adrenergic
the chemical transmitter presumably released only by postganglionic sympathetic fibers is
N. epinephrine
diarrhea would be a __________response.
parasympathetic
the general function of this nervous system is to regulate the responses of the visceral effectors in ways that tend to enable the body to expend maximal energy
sympathetic nervous system
a drug that inhibits the parasympathetic system would or would not make your mouth feel dry
WOULD
a drug that inhibits the parasympathetic system would or would not constrict your pupils
would not
a drug that inhibits the parasympathetic system would or would not make your heart beat faster
would
a drug that inhibits the parasympathetic system would or would not make you constipated
would
is cranial sacral parasympathetic or sympathetic
parasympathetic
is the thoracocolumbar parasympathetic or sympathetic
sympathetic
a neurotransmitter used by preganglionic neuron (parasympathetic)
acetylcholine
a neurotransmitter used by a preganglionic neuron (sympathetic)
acetylcholine
a type of RECEPTOR found on postganglionic neuron (parasympathetic)
nicotinic
a type of RECEPTOR found on postganglionic neuron (sympathetic)
nicotinic
a neurotransmitter used by postganglionic neuron (parasympathetic)
acetylcholine
a neurotransmitter used by postganglionic neuron (sympathetic)
N. epinephrine
a type of RECEPTOR usually found on effector (parasympathetic)
MUSCARINIC
A type of RECEPTOR found on effector (sympathetic)
ALPHA & BETA
What division of the ANS has only one type of ganglia?
Parasympathetic division
What division of the ANS has two types of ganglia?
Sympathetic division
What is the name of the parasympathetic ganglion?
terminal
where is the terminal type of ganglia located?
close to its target
what are the 2 types of ganglia in the sympathetic division of the ANS?
sympathetic chain (vertebra) ganglia
collateral (pre-vertebral) ganglia
where are the sympathetic chain (vertebral) ganglia located?
along spinal cord
where are the collateral (prevertebral) ganglia located?
anterior to the vertebrae
if a surgeon severs the “white ramus communicantes” during surgery what neurons have been cut?
preganglionic sympathetic neurons
if a surgeon severs the “gray rams communicantes” during surgery what neurons have been cut?
postganglionic sympathetic neurons
The _____ division of the ANS is also known as the thoracocolumbar
sympathetic
The _____ division of the ANS is also know as the craniosacral
parasympathetic
What cranial nerves contribute to the parasympathetic division of the PNS?
3, 7, 9, 10
What cranial nerves contribute to the sympathetic division of the ANS?
NONE NONE NONE NONE NONE NONE NONE
What spinal nerves contribute to the parasympathetic division of the ANS?
S2-S4
What spinal nerves contribute to the sympathetic division of the ANS?
T1-L2
Which division of the ANS has a general effect on the entire body at one time?
parasympathetic
Which divines of the ANS has a localized effect on the body?
sympathetic
The location of the ANS ganglia affects the length of what pre-ganglionic neurons?
parasympathetic division
Which division will have relatively short pre-ganglionic neurons?
sympathetic division
Which division will have relatively long post-ganglionic neurons?
sympathetic division
which division will have relatively short post-ganglionic neurons?
parasympathetic divison
know how gray and white matter is arranged in spinal cord
horns, commissures, etc
tracts are AKA
fasciculi a “unit of organization” can see this word in different contexts
white columns
bundles of axons
relay same info in same direction
gray matter of spinal cord organized into functional groups called
nuclei
have sensory nuclei on dorsal side, and motor nuclei on ventral side
3 CT layers of spinal cord
epineurium, perineurium, endoneurium
