Unit 2 Review Flashcards
at resting potential, when sodium is on the outside, potassium on the inside of a neuron
polarization
normal, happy resting state. strives to obtain regularity
homeostasis
when the nucleus decides to fire, it fires down the axon completely or not at all
all or nothing prinicple
when a message begins, opposites are no longer away from each other, causing potassium ions to rush out
depolarization
period of the time after firing that the neuron is focused on resetting, and therefore is unable to fire again
refractory period
block reuptake
reuptake inhibitors
muscle contractions, memory and learning (Alzheimer’s)
acetylcholine
movement thought process, rewarding sensation (schizophrenia, drug addiction)
dopamine
emotional states, sleep (depression)
serotonin
physical arousal, learning, and memory (depression, stress)
norepinephrine
inhibition of brain activity (anxiety)
GABA
pain perception, positive emotions, runner’s high (opiate addiction)
endorphins
make neuron fire
mimic neurotransmitters
agonist
stop neural fire
block neurotransmitters
antagonist
major excitatory neurotransmitter, involved in memory (migraines, seizures)
glutamate