011107_Brain2 - Review Question In a typical action...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Review Question In a typical action potential, which of the following happens? a) The interior charge of the cell goes from 0 mV to +110mV, then the cell is immediately ready to fire again. b) The interior charge of the cell goes from -70mV to +40mV, then the cell is immediately ready to fire again. c) The interior charge of the cell goes from -70mV to +40mV, after which there is a period of ~ 1 millisecond when the cell cannot fire. d) The interior charge of the cell goes from 0 mV to +110mV, after which there is a period of ~ 1 millisecond when the cell cannot fire.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Background image of page 2
The Brain: Day 2 More about Neurotransmitters Brain Tour (1)
Background image of page 3

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

View Full DocumentRight Arrow Icon
The Neuron in Action (1) Positively charged ions enter the cell (2) If the change is great enough (reaches threshold) the Na + channel opens
Background image of page 4
Inter-neuron Communication: Excitatory Positive Ions enter the cell
Background image of page 5

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

View Full DocumentRight Arrow Icon
Inter-neuron Communication: Inhibitory (3) Negative ions enter the cell
Background image of page 6
Summing in the Soma Each cell receives neurotransmitters from many cells (many dendrites) In the cell body (soma), the total incoming charge (excitatory/inhibitory) from these connections is “summed” If the total change reaches threshold, an Action Potential will occur.
Background image of page 7

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

View Full DocumentRight Arrow Icon
Clean-Up What happens to the neurotransmitters once they have done their job? Enzymes:
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/07/2008 for the course PSYCH 101 taught by Professor Passer during the Spring '07 term at University of Washington.

Page1 / 27

011107_Brain2 - Review Question In a typical action...

This preview shows document pages 1 - 9. Sign up to view the full document.

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