Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chap 12 cont.

nervous

QuestionAnswer
extracellular fluid is rich in Na and Cl
inward flow of ___ cant keep up with outward flow of ___ na/ K
graded potentials have _____ and ______ hyperpolarization and depolarization
membrane has become more negative hyperpolarization
membrane has become more positivit depolarizaion (goes up) MV
in ____ the signals are ____, meaning they vary in alplitude (size), depending on the strength of the stimulus and localized graded
graded potentials occur most often in the ___ and _____ of a neuron dendrites and cell body
_____ stiumulation of membranes with mechanical gated ion channels (pressure) mechanical
____ stiumulation of membranes with ligand gated ion channels (neurotrasnmitter) chemical
____ or _____ is a sequence of radibly occuring events that increase and eventually reverse the membrane potential (depolarize) and then restore it to the resting state (repolarize) action potential (AP)
During an AP, voltaged gated ____ and ____ channels open in sequence Na and K
when Na rushes in its depolarization
K rushes out it is repolarization
in the depolarizing phase of AP the voltaged gated ____ channels open and __ rushes into cell Na
depolarizing is an example of positive feedback process
when a chem or mech. stimulus caused a graded potentiatl to reach at least -55mV or threshold depolarization
when threshold pontential of -55 is reach, voltaged gated K channels open repolarizing
in repolarizing ___ channel is much slowing than Na channel opening which caused depolaization K
Created by: Mollie28
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards