Electrochemical impulse ❌ How electric current is generated in the body.
Action potential : ❌
The voltage difference across a nerve cell membrane when the nerve is excited.
Resting potential ❌
Voltage difference across a cell membrane during the resting stage
Unstimulated axon ✅
Stimulated axon ✅
Repolarization ✅
Depolarization ✅
Sodium-potassium pump ❌
Located in the cell membrane, an active transport method that moves sodium ions out of and potassium ions into a cell against their concentration gradient.
Polarized membrane ✅
Refractory period ✅
Threshold level ❌ Minimum level of a stimulus required to produce a response.
All-or-none response ❌ A nerve or muscle fibre responds completely or not at all to the stimulus.
Key: Check = I know, X = Don't know
Synaptic transmission ✅
Synapses ❌
Small spaces between neurons or between neurons and effectors.
Postsynaptic neuron ❌
Neuron that carries impulses away from the synapse.
Presynaptic neuron ❌
Neuron that carries impulses to the synapse.
Neurotransmitters ❌
Chemicals released from vesicles into synapses. Located in the end plates of axons.
Acetylcholine ❌
Neurotransmitter released from vesicles in the end plates of neurons, that makes the postsynapatic membranes more permeable to sodium ions.
Cholinesterase ❌
Enzyme, which breaks down acetylcholine, that is released from postsynapatic membranes in the end of plates of neurons shortly after acetylcholine.
Summation ❌ Effect produced by the accumulation of neurotransmitters from two or more neurons
Hyperpolarized ❌ A Condition when the inside of the nerve cell membrane becomes more negative than the resting potential.