CBNS PRACTICE QUESTIONS &
ANSWERS SOLVED 100% CORRECT!!
1 of 52
Term
find the odd man out
dopamine
serotonin
epinephrine
norepinephrine
Give this one a try later!
serotonin potassium
, anterograde depolarization
Don't know?
2 of 52
Term
what cells form myelin sheaths in the CNS?
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nodes of Ranvier oligodendrocytes
anterograde temporal and spatial
Don't know?
3 of 52
Term
if you elicit APs using a stimulating electrode within the center
of the neurons axon, in which direction will it travel?
Give this one a try later!
both directions astrocytes
, serotonin Goldman equation
Don't know?
4 of 52
Term
what causes Na+ channel inactivation?
Give this one a try later!
Electrical potential difference that exactly balances an ionic
concentration gradient
The Goldman equation is a mathematical formula that takes into
consideration the relative permeability of the membrane to different
ions
Above threshold, the action potential either occurs fully, with the
same amplitude and duration, or it does not occur at all.
-Increased positive charge inside the neuron pushes the ball to
block the ion pore.
-Conformational change occuring during activation of Na+ channels
brings negatively charged amino acids closer towards intracellular
region
attaching to the ball.
Don't know?
, 5 of 52
Term
the binding site for acetylcholine in nicotinic acetylcholine
receptors are present in
Give this one a try later!
depolarization Goldman equation
Alpha subunits diffusion force
Don't know?
6 of 52
Term
the falling phase is caused by Na+ channels closing T/F
Give this one a try later!
voltage gated potassium/opening Ca2+
falling phase- efflux of K+
overshoot- inactivation of Na+
channels
Fals
e undershoot- relative refractory
period
rising phase- influx of Na+
ANSWERS SOLVED 100% CORRECT!!
1 of 52
Term
find the odd man out
dopamine
serotonin
epinephrine
norepinephrine
Give this one a try later!
serotonin potassium
, anterograde depolarization
Don't know?
2 of 52
Term
what cells form myelin sheaths in the CNS?
Give this one a try later!
nodes of Ranvier oligodendrocytes
anterograde temporal and spatial
Don't know?
3 of 52
Term
if you elicit APs using a stimulating electrode within the center
of the neurons axon, in which direction will it travel?
Give this one a try later!
both directions astrocytes
, serotonin Goldman equation
Don't know?
4 of 52
Term
what causes Na+ channel inactivation?
Give this one a try later!
Electrical potential difference that exactly balances an ionic
concentration gradient
The Goldman equation is a mathematical formula that takes into
consideration the relative permeability of the membrane to different
ions
Above threshold, the action potential either occurs fully, with the
same amplitude and duration, or it does not occur at all.
-Increased positive charge inside the neuron pushes the ball to
block the ion pore.
-Conformational change occuring during activation of Na+ channels
brings negatively charged amino acids closer towards intracellular
region
attaching to the ball.
Don't know?
, 5 of 52
Term
the binding site for acetylcholine in nicotinic acetylcholine
receptors are present in
Give this one a try later!
depolarization Goldman equation
Alpha subunits diffusion force
Don't know?
6 of 52
Term
the falling phase is caused by Na+ channels closing T/F
Give this one a try later!
voltage gated potassium/opening Ca2+
falling phase- efflux of K+
overshoot- inactivation of Na+
channels
Fals
e undershoot- relative refractory
period
rising phase- influx of Na+
