- Shuffle
Toggle OnToggle Off
- Alphabetize
Toggle OnToggle Off
- Front First
Toggle OnToggle Off
- Both Sides
Toggle OnToggle Off
Front
How to study your flashcards.
Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key
Up/Down arrow keys: Flip the card between the front and back.down keyup key
H key: Show hint (3rd side).h key
PLAY BUTTON
PLAY BUTTON
15 Cards in this Set
- Front
- Back
|
What are the three general types of neuronal electrical signals?
|
-Action Potentials
-Synaptic Potentials -Generator Potentials |
|
What is the Vm?
|
the difference in electrical charge accross the neuronal membrane. This is the membrane potential
|
|
What is the Vr?
|
-resting membrane potential
the difference in electrical charge across the neuronal membrane when the neuron is not firing (resting) |
|
At rest, the charge inside of a neuron is typically ______ relative to the outside
|
negative
|
|
An increase in the potential, or making the inside more _____, is called __-polarization
|
-negative
-hyper |
|
A decrease in the potential, or making the inside of the neuron more _____, is called __-polarization
|
-postive
-de |
|
Under normal gravity, a container with a water-permable membrane contains 10% sucrose solution on one side and 5% sucrose soltution on the other. Can the concentrations equilibrate?
|
No, but they will get close. Water will flow from the 5% side into the 10 percent side, raising the concentration of 5% side while lowering that of the 10percent side to result in about 8% and 7%.
|
|
Explain the relationship between electrolytes and ions.
|
Electrolytes are ionic molecules that, when immersed in water will dissolve to become charged particles (ions)
|
|
Which ions are highly concentrated outside the neural membrane, at rest?
|
Na and Cl
|
|
Which ions are highly concentrated inside the neuron at resting state?
|
K+ and proteins-
|
|
What are the three properties of gated ion chans?
|
1. conduct ions
2. ion specific 3. open and close depending on ESF, gradients, mechanical force |
|
How do gated ion chans open and close?
|
1. a point in the lumen closes
2. the entire lumen closes 3. an attached particle may swing into the lumen and close it |
|
Are non-gated chans always open?
|
No. if they were there would be no potential difference
|
|
How are non-gated chans similar to gated chans?
|
They also conduct ions and are specific as to which ions they conduct
|
|
How are non-gated and gated chans different in regards to location?
|
The gated chans are selectively located in membranes while the non-gated channels are quite pervasive.
|
