Voltage-gated Ion Channel

Question 1

Where is the voltage-gated ion channels,

Answer 1

found in the axon hillock

• terminals
• nodes of ranvier

Question 2

ONLY TWO TYPES of ions

Answer 2

Na+

K+

Question 3

Axon Hillock says

Answer 3

If you can bring me enough EPSP in comparison to IPSP, to bring the membrane potential to -55, ill initiate an action potential

Question 4

At rest

Answer 4

-70mV

Question 5

Action Potential

Answer 5

+30mV

Question 6

Threshold

Answer 6

+55

Question 7

VG (Na+) Channels

Answer 7

Opens at -55mV

Clases at +30mV

Question 8

VG (K+) Channels

Answer 8

Opens at +30

Closes -70mV

Question 9

At -55mV, the VG _________.

Answer 9

(Na+) channels open

Question 10

Na+ ______, pours into cell until the inside voltage becomes ______.

Answer 10

influxes

+30mV

Question 11

Stops because the ______, then the axon hillock concentration is ______, which leads to neurotransmitter release.

Answer 11

gate closes

+30mV

Question 12

Some of it goes to the next ____, brings it up to______, causing this __.

Answer 12

node
-55mV
gates to open

Question 13

The process _____ down the axon in each _____ until it reaches the terminals.

Answer 13

repeats

node