more neuron crap(exam4)

what two forms does a nerve impulse have to take to travel from pt.A to pt.B?
- 1.excitability or irritability
- 2.conductivity
what is excitability or irritability?

nerve impulse traceling along a single neuron->electrical event
what is conductivity?

nerve impulse traceling between adjacent neurons-> chemical event
what does excitability of a neuron depend upon?

being polarized
what is plasma membrane composed of?
and is it a good or poor electrical conductor?

it is composed of phospholipids therefor a poor electrical conductor
the plasma membrane separates 2 good conductors, what are they and why are they good conductors?
- a.extracellular fluid and interacellular fluid are good conductors
- b. because they contain lots of "ions"
ions in the 2 solutions attempt to reach equilibrium as a result of what 2 forces?
- a)concentration forces
- b)electrical forces
what are concentration forces?

high concentration to low concentration
what is electrical forces?

opposite charges attract, & like charges repel

Author

rcrchick

14843

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more neuron crap(exam4)

Description

exam4 more neuron crap

Updated

2010-04-16T21:19:19Z

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