Physiological Psychology Ch. 3: Generation, Transmission, & Integration Of Neural Signals

Front 1

propagated (digital) electrical message within a neuron, travels along axon to the presynaptic axon terminals:

Back 1

action potential

Front 2

positively charged ion such as K+

Back 2

cation

Front 3

negatively charged ion such as Cl-

Back 3

anion

Front 4

two names for the watery solution found within cells:

Back 4

intracellular fluid, cytoplasm

Front 5

two names for the fluid in the spaces between cells and in the vascular system:

Back 5

interstitial or extracellular fluid

Front 6

cell membrane is composed of a "_ _ "

Back 6

lipid bilayer

Front 7

pore in the cell membrane allowing passage of certain ions when the channel is open:

Back 7

ion channel

Front 8

describing the property of an ion channel's susceptibility to being opened or closed via chemicals, voltage changes, or mechanical actions:

Back 8

gated

Front 9

property of a membrane allowing some substances to pass through, but not others:

Back 9

selective permeability

Front 10

spontaneous spread of molecules of one substance among those of another substance until a uniform concentration is achieved:

Back 10

diffusion

Front 11

variation of the concentration of a given substance within a particular region:

Back 11

concentration gradient

Front 12

phrase describing the movement of particles from high density to low density areas till diffusion is uniform:

Back 12

"down the concentration gradient"

Front 13

force that causes molecules to attract to oppositely-charged particles, and to repel like charges:

Back 13

electrostatic pressure

Front 14

particle that can enter or exit the neuron fairly freely via one type of ion channel:

Back 14

potassium (K+)

Front 15

energy-costly mechanism used by neurons to maintain ionic differences across neuronal membranes, spitting out 3 of one molecule and bringing in 2 of another:

Back 15

sodium-potassium pump