Action! Potential! Flashcards
Crash course flash cards
The way that neurons carry impulses indicating a strong signal.
More frequent action potentials
The name for the difference in electrical charges comparing the inside of a cell to the outside of a cell.
Membrane potential
Ion channels that open at a specific membrane potential
Voltage-gated channels
What ions are floating outside of a resting neuron excitedly waiting to be let in, contributing to the polarized resting membrane potential
Sodium ions
The way that neurons carry impulses indicating a strong signal
More frequent action potentials
The way that neurons carry impulses indicating a weak signal
less frequent action potential
The period after it’s carried an action potential that a neuron cannot transmit another, because it is re-establishing resting potential and resetting voltage gated channels.
Refractory period
What is required to allow charged atoms to diffuse across a cell membrane?
ion channel
The process of bringing a neuron’s membrane potential back from near zero zero back down towards -70 mV
Repolarization
A small change in the membrane potential in a small region of a cell
graded potential
A change in membrane potential that brings it toward zero
depolarization
The name for the nervous impulse carried along the length of a neuron’s axon?
action potential
What is saltatory conduction?
How a myelinated axon carries an action potential that jumps from node to node
ion channels that open when a specific chemical binds to the channel
ligand-gated ion channels
Ion channels that open when they are stretched, pushed on, or temp changes.
mechanically gated channels
The name for how insulating an object is against electrical current
Resistance
