n.s. Electrophysiology Flashcards Preview

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Flashcards in n.s. Electrophysiology Deck (10):
1

Electrophysiology:

the cellular mechanims to produce electrical potentials & currents

2

Electrical Potential:

the difference in concentration of charged particles b/w 1 point & 1 point


a form of potential energy, ujnder circumstances can produce an electric current

3

Polarization:

positive vs. negative state f having electrical potential

4

Electric Current:

the flow of charged particles from 1 point to another point

5

in the body the chagred particles are?

Ions

cations/anions

NA, K

6

Gated Ion Channel:

w/in ell membranes that allow IONS to move through

7

Electrical currents in the body are created by?

the flow of ions through gated channels in the cell membrane

8

Intracellular Fluid: (ICF)

ICF AKA Cytosal

contains: sodium ions (positive)
Intercellular ions (negative)

ICF has a net-negative charge

9

Extracellular Fluid:

ECF AKA intestinal fluid

contains:

Potassium Ions(positive)

net-positive charge

10

Diffusion:

movement of particles from a HIGHER to LOWER concentration

movement of IONS through the cell membrane