Ligand-gated ion channels Flashcards
1
Q
Three types of ions in Ligand-gated channels
A
Na+
K+
Cl-
2
Q
Will only open gate with
A
neurotransmitter or ligand
3
Q
STEPS OF LIGAND GATED-CHannel
A
- AP leads to transmitter release
- Diffuses across synaptic cleft
- Binds to its receptor (next to receptors r LG-ion channel)
- Receptors change shape when it binds
- Kicks open the gate
4
Q
When LG Na+ channel opens, it ____ and spreads apart because ___ doesn’t like ______.
A
influxes
postive
positive
5
Q
EPSP
A
Excitatory Post Synaptic Potential
6
Q
NA+ When LG channel opens and membrane potential becomes more ____, CALLED _____
A
Positive
EPSP
(INFLUX)
7
Q
IPSP
A
Inhibitory Post Synaptic Potential
8
Q
Cl- when LG channel opens and membrane becomes more ______, called ______.
A
Negative
IPSP
(INFLUX)
9
Q
K+ When LG channel opens and membrane potential becomes more_______, releases ______.
A
Negative
IPSP
(OUTFLUX)
