Leu 20
Autonomic Nervous System
muter division of PNS responsible for
regulating involuntary
·
,
bodily functions
↳ controls
glands , cardide muscle, Smoot muscle (Visceral
smoom of our internal
to ensure operation organs
1.
Parasympathetic : rest-digest promotes relaxation digestion ,
, ,
conservation
and
energy
↳ slows MR ↓ BP , andstimulates
digestion
,
.
2
Sympathenz Fight/flight
:
, prepares body formation
and stress
↳ HR , BP , and respiration blood
Flow to the muscles
,
while
diverting
* Eustions from conscious control
independeristy ,
occuring who awareness/intent ensures >
-
homeostasis anwalds it to
adapt to stimuli
Visceral reflextoo
automatic stereotyped responses Stimuli
to /0
conscious awareness
"originate within the internal
organs (visceral
1 stimulus Delection :
within viscera
specialized sensory receptive continuously
monitor internal condining
↳
sensible to stimul ; like stretch in hollow organs , changes
in BP , blood pfl , temp, tissue
damage ,
or inflation
2 .
Afferent Signal Transmissio :
Stimulus exceeds Hireshold ,
receptors generate A
↳
signal transmitted down Afferent neurons (1"leg)
, Central
processing
.
3 :
·
afferent signals reach CNs
Spinal wood =
simple
-
complex
:
-
branstem
- ↑ brain center :
integration / other physiological processes
. Efferent initiation :
11
signal
CNS will send
appropriate response involves activating ,
specific preganglionis neuing in ANS
merson comes from spinal and
↳
pregangliani
or brainster epferent neuen >
/ carries
-
Y
autonomic lim
gang for
relatively short-
myelinated , allowing
↳
rapid signal transmission
5 in Autonomic
Synaptic Transmissio ranglia
.
neuron
preganglionic
an auronomic
synapses
u/
post ganglionic weerm
within
ganglia
release of
↳
synapse
involves
asertycholine , which binds
to nicotinic Ach receptors on
postganglionic neuen
Nelson Activation Organ Response
6 .
Postganglionic +
Effectiv
carried from
-signal glonglish target organ
-
>
↳>
typically longer-numyelinated and
-release NT . (norepinephrine or Sympathetic
acetylcholine Pur parasympathetic) at target organ
epectu cells
↳ triggers specific response , like
contraction/relavaion , He ,
gland secoction
* ANS doesn't dictate absolute Punction, but rater acts as
ague-tuner ,
Linois
modulating
brain
Punctions
which detemnes
readby ,
the
adjustments to be made
↳
signals sent target through Sympainetic/
to
parasympathetic
in
implement adjustments
,Anatomical/Physiological Differences
the
From lumbar
originate
thoracic
and
↓ regions
of the
Spinal
cord
7 short arons
exit
- sympathetic chain ganglia ayous
:
Spinal cord+
synapse us postganglionic
neurons in sympathetic chain ganglia
located
column alongside verebral
·gre
↳ ACh NT used
Flony
is at
gauglich in both Sympathetra
Sin am
and
parasympathetic
divisions of the ANS
m
SNS is
Functional role : activated
during times of stress
or
physical exertion
)
↳
preparing the body for "Right/flight" response
PS divisi craniosacral) long
preganglionic neurons have axes
Rem INS--ganglia ,
located
target organs
near
it is
↳ once
signal reaches
ganglich ,
relayed to
horter axons)
postganglichic nurs is
postganglicis neurons
directly innerate target organs,
ACh which illicits
releasing primary NT rest
as a
,
or relaxation
↓
digest response ↓ GR, digestic, "promoting
, Neural Divergence how d influence multiple
single
:
here can
target cells/organs
extensive, occurs
-
sympathetic
:
primarily at
preganglionic
levels
singleneuron originating thoracolumber region
-
in
,
of Spinal card can branch extensively
2) branches form synapses ul 10 - 20 + neurons,
so when firs many posty
activate
preg posty ,
rapid fight/ flight response across many organs
↳
↳
Parasympathetic
:
less extensive + different pattern ,
tend to
have <H branches
" most
divergence occurs after Fiber reaches
its
preg
targetorguir
↳ ricalized/ specific control - > Selective stimulation
Differences BIW ANS + SNS
1 .
Neuronal chain structure
socratic never
extrvery ; moter
:
=
single
heaven Ren Cris extends to
muscle &
rapid control of
whmtany
↳ +
precise
movement
↳ autocomic : 2-neum-chain wh pregt posty
neuros
synapseand slower relay winds
>
gangren in
-
, were
↳
complex Signal Athway
.
2
Synaptic Transmission characteristics
-somatic :
specialized Synapse (NMJ) , releases
Ach-1
highly vocalized+specif termattina
- automic : neurons
series in
posty
varicosities NT released
,
thm
diffusion , affecting multiple target cells at once
and
↳
Typically use norepinephile in
sympathetic ,
*oh in
parasympathetic
Autonomic Nervous System
muter division of PNS responsible for
regulating involuntary
·
,
bodily functions
↳ controls
glands , cardide muscle, Smoot muscle (Visceral
smoom of our internal
to ensure operation organs
1.
Parasympathetic : rest-digest promotes relaxation digestion ,
, ,
conservation
and
energy
↳ slows MR ↓ BP , andstimulates
digestion
,
.
2
Sympathenz Fight/flight
:
, prepares body formation
and stress
↳ HR , BP , and respiration blood
Flow to the muscles
,
while
diverting
* Eustions from conscious control
independeristy ,
occuring who awareness/intent ensures >
-
homeostasis anwalds it to
adapt to stimuli
Visceral reflextoo
automatic stereotyped responses Stimuli
to /0
conscious awareness
"originate within the internal
organs (visceral
1 stimulus Delection :
within viscera
specialized sensory receptive continuously
monitor internal condining
↳
sensible to stimul ; like stretch in hollow organs , changes
in BP , blood pfl , temp, tissue
damage ,
or inflation
2 .
Afferent Signal Transmissio :
Stimulus exceeds Hireshold ,
receptors generate A
↳
signal transmitted down Afferent neurons (1"leg)
, Central
processing
.
3 :
·
afferent signals reach CNs
Spinal wood =
simple
-
complex
:
-
branstem
- ↑ brain center :
integration / other physiological processes
. Efferent initiation :
11
signal
CNS will send
appropriate response involves activating ,
specific preganglionis neuing in ANS
merson comes from spinal and
↳
pregangliani
or brainster epferent neuen >
/ carries
-
Y
autonomic lim
gang for
relatively short-
myelinated , allowing
↳
rapid signal transmission
5 in Autonomic
Synaptic Transmissio ranglia
.
neuron
preganglionic
an auronomic
synapses
u/
post ganglionic weerm
within
ganglia
release of
↳
synapse
involves
asertycholine , which binds
to nicotinic Ach receptors on
postganglionic neuen
Nelson Activation Organ Response
6 .
Postganglionic +
Effectiv
carried from
-signal glonglish target organ
-
>
↳>
typically longer-numyelinated and
-release NT . (norepinephrine or Sympathetic
acetylcholine Pur parasympathetic) at target organ
epectu cells
↳ triggers specific response , like
contraction/relavaion , He ,
gland secoction
* ANS doesn't dictate absolute Punction, but rater acts as
ague-tuner ,
Linois
modulating
brain
Punctions
which detemnes
readby ,
the
adjustments to be made
↳
signals sent target through Sympainetic/
to
parasympathetic
in
implement adjustments
,Anatomical/Physiological Differences
the
From lumbar
originate
thoracic
and
↓ regions
of the
Spinal
cord
7 short arons
exit
- sympathetic chain ganglia ayous
:
Spinal cord+
synapse us postganglionic
neurons in sympathetic chain ganglia
located
column alongside verebral
·gre
↳ ACh NT used
Flony
is at
gauglich in both Sympathetra
Sin am
and
parasympathetic
divisions of the ANS
m
SNS is
Functional role : activated
during times of stress
or
physical exertion
)
↳
preparing the body for "Right/flight" response
PS divisi craniosacral) long
preganglionic neurons have axes
Rem INS--ganglia ,
located
target organs
near
it is
↳ once
signal reaches
ganglich ,
relayed to
horter axons)
postganglichic nurs is
postganglicis neurons
directly innerate target organs,
ACh which illicits
releasing primary NT rest
as a
,
or relaxation
↓
digest response ↓ GR, digestic, "promoting
, Neural Divergence how d influence multiple
single
:
here can
target cells/organs
extensive, occurs
-
sympathetic
:
primarily at
preganglionic
levels
singleneuron originating thoracolumber region
-
in
,
of Spinal card can branch extensively
2) branches form synapses ul 10 - 20 + neurons,
so when firs many posty
activate
preg posty ,
rapid fight/ flight response across many organs
↳
↳
Parasympathetic
:
less extensive + different pattern ,
tend to
have <H branches
" most
divergence occurs after Fiber reaches
its
preg
targetorguir
↳ ricalized/ specific control - > Selective stimulation
Differences BIW ANS + SNS
1 .
Neuronal chain structure
socratic never
extrvery ; moter
:
=
single
heaven Ren Cris extends to
muscle &
rapid control of
whmtany
↳ +
precise
movement
↳ autocomic : 2-neum-chain wh pregt posty
neuros
synapseand slower relay winds
>
gangren in
-
, were
↳
complex Signal Athway
.
2
Synaptic Transmission characteristics
-somatic :
specialized Synapse (NMJ) , releases
Ach-1
highly vocalized+specif termattina
- automic : neurons
series in
posty
varicosities NT released
,
thm
diffusion , affecting multiple target cells at once
and
↳
Typically use norepinephile in
sympathetic ,
*oh in
parasympathetic
