Neuro bio class 3-4 Flashcards
1
Q
How can an inward current be produced?
A
Either positive ions going into cell or negative charge going out.
2
Q
How can outward current be produced?
A
By positive charges going from inside the cell to outside the cell.
3
Q
Two fundamentals of neuron doctrine
A
dynamic polarization
specific connectivity
4
Q
dynamic polarization
A
Although the axon can conduct in both directions, in tissue there is a preferred direction for transmission from cell to cell.
5
Q
specific connectivity
A
Held that neurons are discrete cells (not connected in a meshwork), acting as metabolically distinct units.
6
Q
Driving force on ion
A
Vm - Eion
membrane potential) - (eq. potential of ion
7
Q
Nernst potential
A
Eion
8
Q
Average capacitance of neurological membrane
A
1micfroF/sq.cm
9
Q
Four major properties of membrane channels
A
- gating
- conductance
- pharmacology (membrane proteins)
- selectivity
