asymmetric = excitatory = transporting WHAT
glutamate
symmetric = inhibitory = transporting WHAT
GABA
3 egs of excitatory receptors
NMDA, AMPA, mGlu
2 egs of inhibitory receptors
GABA-A, GABA-B
which molecules go in when neuron is depolarised?
Calcium, Sodium
when you depolarise a neuron you ___ its membrane potential and it is ___ likely to fire
increase, more
when you hyperpolarise a neuron you ___ its membrane potential and it is ___ likely to fire
decrease, less
how is the fact that ionotropic receptors have rapid change in membrane potential good for things like learning and ___ conditioning? via ____ receptors, ____ synaptic connections
fear, allows real-time, rapid learning via NMDA receptors - strengthening synaptic connections
metabotropic receptors activate ___ messenger systems and are ___ than ionotropic receptors
second, slower
metabotropic receptors influence ___-term ___ changes in neurons
long, structural
what do metapotropic receptors do to the fast responses of ionotropic receptors?
fine-tine and sustain, make learning more durable and flexible
outline the process of a stimulatory GPCR (metabotropic receptor) activating adenylyl cyclase
alpha subunit in the g protein goes and binds to adenylyl cyclase, which opens sodium/calcium channels,
what do inhibitory GPCRs do?
inhibit adenylyl cyclase, decrease plasticity and hyperpolarise cell
the two kinds of ionotropic glutamate receptors are…
AMPA, NMDA
AMPA receptors allow influx of ___ when opened, and are responsible for ___ postsynaptic potentials
sodium, excitatory
NMDA receptors allow influx of ____ and ___ when opened, and what does calcium promote?
sodium, calcium, promotes neurotransmitter release, synaptic plasticity
what do you need to open an NMDA receptor
glycine, glutamate, pop open the magnesium plug
GABA-A is what kind of receptor
ionotropic
MDMA (ecstasy) and SSRIs are ____, working by ____ reuptake of ____
AGONISTS, BLOCKING, SEROTONIN
cocaine ___ activity of ____ transporter, and is a(n) ___
blocks, dopamine, agonist
amphetamines can ___ dopamine transporters, meaning they cause its ___
reverse, release
ketamine is a(n) _____, and ____ ____ receptors by resembling the ___ plug
antagonist, blocks, NMDA, magnesium
what happens when adenylyl cyclase is bound to? (other than channel opening)
increased gene transcription, increased long-term potentiation, synaptic plasticity
why is gene transcription important
long-term changes, foundation of strengthening/forming synaptic connection –> long-term memory