THE NERVOUS SYSTEM Flashcards
what is the CNS
consists of brain and spinal cord
what is the peripheral nervous system
consists of somatic nerous system and autonomic nervous system
what is the atomic nervous system divded into
parasymapthetic divison and sympathetic division
whats the differnece between automic and somantic
automic is for INVOLUNTARY movemnts you cant control
somaticin volunatray can control
what is hemoststais
maintaintsing the conditions in your body at steady
what does the PNS do
send impulses and recieed impulses through the CNS
how does the flight or fight response
1) brain detects a threat
2) then the hypothalamus releases adrenaline
3) psychological chnages happens and occus in your body
4) sympathetic divisoon activated ( digestion inhibits and saliva heart rate speeds up
5) as the threat passed the parasympathetic division occurs when its at rest
what is synaptic transmittion
the way two neurones communicate and send impulses
how does it occur
a synapse is a gap between two neurones where the presynaptic nerurotarmitter diffuses accross the gap and bind into the receptors of the post synaptic
the remaining of the neurotransmitter ae then reasoorbed and reuptaked by the neurones .
why is the axon covered with myelin sheath
myelien sheath sppeds up the impulses beung sent
what does the cell ody contain
nucleus that contacins genetic material
what does the sensory neurones do
recieved impulses from sense receptors and then to the relay neurone
realy neurone
recieves impulses from the sensory neurone to the motor neurone
motor neurone
send impulses to the effctors to produce a response
what did james lange theory stated
he said that an eevent will happen that will case arousal and then interpretation by the brain and then you would feel a certain emotion
A03
ONE STRENGTH IT SUPPOSRTED IN REAL LIFE WORLD EXPAMPLES …..
ONE WEKANESS ANITHER REASERACHER SAID WE EXPEREIMCE AROUNSAL AND EMOTIONS AT THE SAME TIME …
the two types of neurottanmitters are …
excihibitaoy and inhibitory
how does the excihibitory and inhibitory work
excihibitory is when there is lots of positive charges means more likey to fire
inibitory negatuve charges less likely to fire
if there is enough excihibitory than inhibitory then it will fire .
what did hebbs theory stated
he stated that our brain is plastic and constantly develops evertime we use it as it adpts to new information and neureonsed assesmlies aand become more suffucinet and make stronger connection
A03 of hebbs theory
one strength there is sceimctific basis
one strength there is supported research
what are the four lobes
frontal , partile lob , temporal lob , occiptal lobe
frontal lobe
contain motor area and language area borcas area
what is the borcas area
speech prudtcion
partel lob
it contains somotosensory area
occiptal lobe
a visual area sned impusles to the ey visual field
temporal lobe
auditory and wrenkes area where is understanding speech
what is localisation
diffenrt pasrts os the brain that are specific to funcytions
what is penfields study
see paents reposnse when some pasrt where stimulated
when the somotensosry feels a tingling senstation whwres the visya area they saw colors shadows and then the temporal lobe is past expericed sp in conlcusion the interpretve coretct suppost localistaion
A03
one wkanesss based in patents repsonse ….
one strnegth ebenfited neurosecice ….
wat is interpretive cortect
the asrt where it located in the temporal lobe where all the memory and perceptios are stored in there
what is cognituve neurosceimce
a sceimetific study where it staes that the struectures of the brain influemces mmemroy and behavior
hpw cognitive neurosceimce affects beavior
the amyglada in the temporal lobe causes aggression
how in mental illness
the study showing with less serotonin binding into the neurone causes depression
cognitive
episodic memory hippocampus and sematic memory are in te temporal lobe
what is neurological damage
an event that acsues damage to your neurones that would lead to change of behavior
in strokes
when there isnt enough blood supply into the oxygen .., the damge can bepermannent
motor ability
damage in the motor causes a damage in the motor coordination
behavior
there will be damage in the language area … damage in the boracs area is damge and diffcukt of producg words and speech
describe telving gold study
he wanted to see when thining about episodic and semnati are used in diffenrt past of the brain . a group pf partcipant theretast was to think about some perosnal event and asked questions for the semantic as ther blood flow was measures using the PET scan . in 3 out of the six paartcipant there was a huge diifence of the blood flow between epiosidc and semantic . episdic was in the temporla lobe wereas semantic in the partel lobe . epeisodic and semnatic are two diffenrt memory processs and are loacred in differt areas .
A03
ONE STRENGTH USED A TRUSTRED RESOURCE THE PET SCAN ….
ONE WEAKNESS SAMPLE IS RESTRICTED …
DESCRIBE THE CT SCAN
SHW STHE STRUCTEUE OF THE BRAIN LIKEAN X RAY BUT IT USES LESS RADIATION IT SHOWS IF THERE IS TUMOURS IN THE BRAIN OR NOT , IT DOESNT PROVIDE A LIVE AVTION PHOTO
DESCRIB ETHE PET SCAN
MEAURES BRAN ACTIVITY THE PATENTIC IS INJECTED WIT RADIOCTUVE GUCOSE . THE PASRT OF THE BRAIN MORE ACTUVE WILLL ABSORB MORE
ITS SHOWS LIVE ACTION BUT IT EXPEISVE SO HARD TO OBTAIN RESUKT S
WHAT US FMRI
MEAURES THE OXTEGN LEVEL IN THE BRAIN . ACTIVE BRAIN USES UP MORE OXYGEN SHWOING HIGH ACTIVTY
SHOWS TE BRSIN WHEN ACTION ONLY WORK IF THE AOTIENT IS STILL AD ITS EXEPNSIUEV BUT UT DEOSNT USE ANY RADATION
