~BN11 action potential

~BN11 action potential - Neural Communication Action...

Info iconThis preview shows pages 1–16. Sign up to view the full content.

View Full Document Right Arrow Icon
Neural Communication Action Potential Lesson 11
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Action Potentials Large and rapid change in membrane potential electrically-gated channels EPSPs threshold potential Occurs in axon triggered at axon hillock ~
Background image of page 2
axon hillock
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
AP Characteristics Voltage-gated channels All or none Slow Non-decremental Self Propagated regenerated ~
Background image of page 4
-65 -55 0 +40 -75 Time V m
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
-65 -55 0 +40 -75 Time V m
Background image of page 6
-65 -55 0 +40 -75 Time V m
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
-65 -55 0 +40 75 Time V m
Background image of page 8
0 +40 Time Depolarization Na+ influx drive Na+ into cell V m -65 -55 -75
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
0 +40 Time Depolarization Na+ influx = 105 mV Amplitude - 65 mV to +40 mV V m -65 -55 -75
Background image of page 10
0 +40 Time Repolarization K+ efflux V m -65 -55 -75
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
0 +40 Time After- hyperpolarization V m -65 -55 -75
Background image of page 12
Refractory Period after AP won’t fire again Relative during after hyperpolarization requires greater depolarization ~
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Relative Refractory Period 0 +40 Time V m -65 -55 -75
Background image of page 14
Absolute refractory period Na+ channels deactivate will not trigger AP must reset Ball & Chain Model ~
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 16
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 23

~BN11 action potential - Neural Communication Action...

This preview shows document pages 1 - 16. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online