Autonomic Nervous System Flashcards
sympathetic
fight or flight
smooth muscles of blood vessels
parasympathetic
rest and digest
smooth muscles of organs and glands
ANS: how many sensory (afferent) neurons do both the symp and parasymp have?
only ONE
how many motor (efferent) neurons do both the symp and parasymp have?
TWO
preganglionic myelinated or non myelinated?
myelinated
post-ganglionic myelinated or non myelinated?
non-myelinated
neural crest cells
paravertebral ganglion becomes
sympathetic trunk
sympathetic trunk (chain) innervates:
pupil
heart
bronchial tree
hepatic artery
adrenal medulla
sweat glands
genitals
T1-L2
the sympathetic autonomic circuit requires __ efferent neurons
two
pre-ganglionic efferent neuron locations
cell bodies are only located at levels T1-L2
post-ganglionic efferent neuron locations
can be anywhere within the sympathetic trunk or sympathetic ganglia (not in spinal cord)
sympathetic preaortic ganglia
sympathetic splanchnic nerves
structure that connects the sympathetic trunk to the preaortic ganglia
- contain preganglionic neurons
what connects the ventral rami and sympathetic trunk?
white communicating rami (T1-L2 area)
&
grey communicating rami (every level)
what levels are both white and gray communicating rami present?
T1-L2
identify the dorsal/ventral orientation
dorsal
ventral
identify grey matter, white matter
identify the afferent (sensory ) neurons, dorsal root ganglia, efferent (motor) neuron
identify dorsal rami, ventral rami and spinal nerve trunk
identify the sympathetic: trunk, grey/white communicating rami, splanchnic nerve
identify the parasympathetic splanchnic nerve
parasympathetic innervates from where (2 places)
brainstem
S2-S4
parasympathetic innervates:
pupil
heart
bronchial tree
gut tube
genitals
bladder
what nervous system is the top, middle, bottom?
parasympathetic nerve origins
brainstem (CN III, VII, IX, X)
S2-S4 (hindgut)
what NS innervates the pupil, heart, bronchial tree, gut tube, genitals, and bladder?
parasympathetic NS
why do some areas (C, L, S) have more gray matter than the thoracic region?
there is more white matter (myelinated) towards the brains for fast transfer of information
sacral region doesn’t have a high need for fast transfer of information so it has less white matter
what NS controls smooth muscle of blood vessels?
sympathetic NS
what NS controls smooth muscles of GI tract and glands?
parasympathetic NS
what is #1?
cell body of preganglionic neuron
neuron path trace
what is #2?
cell body of the postganglionic neuron
where is sympathetic of #1?
where is sympathetic of #2?
where is parasympathetic of #1?
where is parasympathetic of #2?
sympathetic of #1: spinal cord or T1-L2
sympathetic of #2: sympathetic chain or preaortic ganglion
parasympathetic of #1: brainstem or S2-S4
parasympathetic of #2: intramural ganglia (within the body)
what is blue, yellow, red, andorange?
blue: neural tube
yellow neural crest
red: somites
orange: notochord
neural crest cells become all the ______ ______
neural crest cells become all the peripheral nerve ganglia
neural crest cell migration to what three areas?
paravertebral region (sympathetic chain ganglia)
preaortic region (preaortic ganglia)
inside the viscera (intramural ganglia- within organs)
where is the paravertebral ganglia (sympathetic chain)?
where is the preaortic ganglia (prevertebral ganglia)?
where is the intramural ganglia?
inside organ itself
where are parasympathetic origins?
where is the sympathetic origin?
what NS does pre-aortic ganglia (post-ganglionic neurons) come from?
what NS do intramural ganglia (postganglionic neurons) come from?
Parasympathetic: brainstem, S2-S4
intramural ganglia
Sympathetic: T1-L2
preaortic ganglia
2 neuron model for sympathetic NS
Sympathetic 2-neuron model to target organs
what are some target organs?
label
sympathetic chain trace: from preganglionic (efferent) to targets (at level, above, below)
sympathetic preaortic ganglion trace: from preganglionic neuron (efferent) to target
white vs gray communicating rami
????
sympathetic preaortic ganglia trace
target organs of sympathetic NS
head/neck
heart
lungs
blood vessels
sweat glands
GI tract
adrenal gland
renal system
pelvic organs
parasympathetic NS 2-neuron model
study
somatic and visceral
sensory neurons
autonomic
motor neurons
sensory neurons: somatic or autonomic?
somatic
motor neurons: somatic or autonomic?
autonomic
