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
