Nervous system visual study guide

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·
C
N
ervous Stem S
I
/

Spinal

Network and Command Center
the Nervors System is the
body's messaging
it transmits
messages
and signals to
every part
of the
body and it
when not thinking
almost everything that you do your ,
some even

a we
breathing moving thinking feeling sight taste touch
, , , ,
, , etc. . .


M Central Nervous System (CNS)

FUNCTIONS
Sends
many parts body
from of the to
messages
body tell do
11
train , and from brain back to to it what to
these messages can control ...


and
thoughts memory learning
, , feelings .




Movement (balance coordination)

Senses (Sight ,
touch taste, Smell hear)
, ,
⑤
Healing wounds

puberty & aging
Heartbeat &
Breathing


-
& message BRAIN
response
sweat production
to situations &
sends Flowers
digestion EYEL to
Smell
Goes
sleep Bod




I
BODY
Peripheral Nervous System
Is made out of Nerves that Branch out from the CNS
a
to the rest of the
body
Postman
It acts like a
F
Central Nervors
.




· *
System
forth to and fro
Cary messages back and the brain . -
in


the PNS is how the brain gets information about
the outside world
Control Center




=
Acts like the acts like CEO and
.




"Peripheral" comes from the consists of 2 - parts . Brain , Spinal Cord

FUNCTION
take sends information to
they in and out the

Greek word that means
entire body
.
-

SENSES it's responsible for how the
outter around or outside the center
body gets outside information . (Somatic)
FUNCTION
,



*


MOVEMENT it's responsible for delivering signals Receives
sensory informationFrom PNS
- >
-




to command each muscle in the
body (somatic "Soma" in somatic means body - Process the information (integration)
- UNCONSCIOUS PROCESSES it's responsible for the -

response with
motor output .




unconscious
process of your
body :
breathing heartbeat (Autonomic




M
,




TYPES ... two part
-
two
s...
↓ I
-




-
↓ I
-




Autonomic Somatic
SPINAL CORD BRAIN
PNS PNS its main
job is to send motor
where ·
your brain
J
can
you commands from the brain to
Responsible lot ...




AUTOMATICALLY THINK about it
run
the rest of the body S




Automatic behaviors
acts like highway to brain .
(involuntary ) (Voluntory
-




-
Fight or
flight response
mum -


functioning organs




·
Parasympathetic

S
Sympathetic think
like a
of
tree
the
.
nervous

ROOTS : Brain
system
(CNS)
- memories & emotions
movement (motor function)
Rest and
Digestion
-




Fight or
Flight TRUNK Spinal cord (CNS)
:


LINKS :
https://my.clevelandclinic.org/health/body/23123-peripheral-nervous-system-pns
BRANCHES : Nerves (PNS) Sensory processing
-




action) ( calm and relaxed) 1
(get for
ready https://my.clevelandclinic.org/health/body/central-nervous-system-cns
rur

, Central /Versous S Stem (CNS) F 27 8 . . 2025



SPATCORD
N




I
Consists of 2 main
parts : the BRAIN and the .
It main function is to Receive , Process and response

CNS it taken is

tothe informationthat thePNsendsitsway. thebrainandSpinalcordis"Central"
to the since




Parietal
I Lobe
the Brainl



Minima
Frontal lobe Process sensory
the Grain is made out of 60 % fat and 73 % water
-

personality protein Carbohydrates and salt It weighs 1 3-1 5 kg for an . . .




making
,
-decision
adult and is not a muscle It contains blood vessles
average
.


-
speech ability( level Can be divided into the
and nerves and at a
high
-

thinking ,

math S
-




-behavior,
memory ,

CEREBRUM =



-

volentary movement F .
P .
O . T

Dura matter: outermost layer thick and
tough
temporal lobe
Arachnoid : this web like layer of connective tissue
-


hearing learning feeling
, , .




Short A long-term
memory
-




-
speech understanding




#
Smell
recognition Cerebellum
-




sounds
process
Brain Stem Dura Mater
-




voice ,face
-
identify balance
Breathingtemperature
-
,

↓
-



coordination
heart rate -




-
-



-
.



movement
eye
- ↑




Cerebrospinal fluid and Ventricles Blood Vessels
Inside the brain there
are
passageways These areas are called Ventricles and in them
.
are 4 open areas where between them
I
are
watery fluids called the Cerebrospinal fluid or CSF the CSF
circulates around the ventricles and cushions the Spinal cord and
.


Gray matter White matter
MENINGES
out waste
(mostly somas) (mostly axons)
(Brain
coverings .
)
brain ,
also
washing and
delivering nutrients.
made of nerve fibers


Cranial /Verves
&




m
Inside the cranium (dome of the skull
PART FUNCTION PART FUNCTION

Thalamus Receives and sends signals from
Cranial
-



nerve . . .
to other parts of the brain
1.
sensory organs
Olfactory nerve (sense of Smell)
-
Allows us to feel pain , sleepiness or alert
2: Optic nerve (eyesight
-
Control movement & balance
3 : Oculomotor nerve (pupils Eye motions)
I


4 : Trochlear nerve (muscles in
eye)
includes contains neurons
,
inner
5: Trigeminal nerve
(Convays sensation from the
Communicates with the
Sculp Teeth jaw
, , , sinuses ,
mouth & face ( Since its connected to the spinal cord. cerebral cortex
.

medulla function to
. Abdreens
6 (some muscles eye) its
-

nerve in the ~
main is
of the
Controls the functions
body that
- -
Coordinate Voluntary
Facial
W
7
. nerve (face movements & taste
muscles . (walking
happens without conscious (breathing digestion
, ,
... )
heart
. Vestibulocochlear
8 (balance &
nerve
hearing) studies show that


I involvement
- >
-
-




9: Glossopharyngeal nerve (taste ears throat movement) ,
it has possible
in addiction , autism ,
Hormones that controls reacts.
10 :
Vagus nerve (ear sensations , digestive system ,
heart beat) How the
body
11 : (Head neck & shoulder muscles)
Accessory nerve
Affects Bodyweight ,
heart rate , blood pressure ,
12 :
Hypoglossal nerve (motor activity in
tongue body temperature & appetite ,
thirst memory ,
-

LINKS : https://www.hopkinsmedicine.org/health/
conditions-and-diseases/anatomy-of-the-brain