Which gets weaker over time? O' both action and graded potential O graded potential O action potential

Role of myelin is to allow action potential jump down axon quickly? O True False

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Excitatory postsynaptic potentials (EPSP) are associated with ___     depolarization     repolarization     hyperpolarization     resting potential

MetaNeuron Lesson 4 1. Action Potential Threshold. Vary the amplitude of "Stimulus 1". What effect does this have on the cell response (Figure 7)? What is the threshold stimulus amplitude (in uA) for initiating an action potential? The threshold stimulus is best measured by adjusting the stimulus amplitude in 0.1 µA increments until it is just large enough to initiate an action potential. Click on the "Stimulus 1 Amplitude" gray button and move the mouse while holding down the ctrl key. 2. Action Potentials and the Na+ equilibrium potential. Set "Stimulus 1 Amplitude" to 150 μA. The stimulus will evoke an action potential. Vary the "Na+ equilibrium potential". What effect does this have on the action potential? Why? 3. Action potentials and gK max. Using a "Stimulus 1 Amplitude" of 150 μA and a "Na+ equilibrium potential" of 50 mV, vary "gK max". What effect does this have on the time to action potential initiation and the width of the action potential? Why? 4. Na+ channels and Action…

An increase in the magnitude of depolarization by a graded potential will increase the threshold potential increase the duration of an action potential increase the frequency of action potentials two of the above

A A Aa v Ao O... 11 AaBbCcDdEe AaBbCcDc AaBbCcDdE AaBb( AaBbCcDdEE AaBbCcDdEe U v ab A ev A v X, Normal No Spacing Heading 1 Heading 2 Title Subtitle temporal summation spatial summation Unidirectional and non-degrading Action potential o Depolarization; Na gates opening o Repolarization: K gates opening o Hyperpolarization: K gates closing Movement down an axon Refractory periods Myelin and Axon size effect Action potential stimulated release Neurotransmitter (NT) recycling Neurotransmitters o Acetylcholine Biological amines (Serotonin, norepinephrine and epinephrine) Single amino acids (Glutamate and GABA) Fast and Slow effects and Receptor effects The Autonomic System Division definition

Which image represents depolarizing graded potential?

What drives K+ ions through voltage gated channels while funny channels are also open? O pifference in K+ concentration across the PM O pressure potential O Both difference in K+ concentration across the PM and Membrane potential (difference in charge across the membrane) O Osmotic potential O Membrane potential (difference in charge across the membrane)

Explain the process of action potential in laymans terms.