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WorksheetsNeurology test 2
Total questions: 31
Worksheet time: 16mins
Which of the following is a neurotransmitter?
glucose
hemoglobin
acetylcholine
collagen
how is a neurotransmitter released from the presynaptic neuron?
diffusion
active transport
exocytosis
endocytosis
the effect of a neurotransmitter on the postsynaptic neuron depends on:
amount of neurotransmitter released
distance between the neurons
type of receptor on the postsynaptic membrane
size of the presynaptic neuron
a change in the postsynaptic membrane potential that makes it more likely to generate an action potential
inhibitory postsynaptic potential
excitatory postsynaptic potential
resting potential
action potential
a change in the postsynaptic membrane potential that makes it less likely to generate an action potential
excitatory postsynaptic potential
action potential
resting potential
inhibitory postsynaptic potential
the summing of multiple postsynaptic potentials occurring at different locations on the neuron at the same time
temporal summation
spatial summation
refractory period
depolarization
the summing of multiple postsynaptic potentials occurring in rapid succession at the same synapse
spatial summation
repolarization
temporal summation
hyperpolarization
a group of neuron cell bodies located outside the central nervous system
nucleus
nerve
tract
ganglion
neurons that conduct nerve impulses from sensory receptors to the central nervous system
motor neurons
interneurons
sensory neurons
efferent neurons
neurons that transmit nerve impulses from the central nervous system to muscles or glands
sensory neurons
interneurons
afferent neurons
motor neurons
neurons located entirely within the central nervous system that integrate sensory and motor information
efferent neurons
afferent neurons
interneurons
neuroglia
which of the following is NOT a type of neuroglia found in the central nervous system
astrocyte
oligodendrocyte
microglia
Schwann cell
neuroglia that form the myelin sheath in the peripheral nervous system
astrocytes
ependymal cells
Schwann cells
microglia
normal resting membrane potential of a neuron
+30mV
0mV
-70mV
+70mV
ion most responsible for establishing the resting membrane potential
sodium
potassium
chloride
calcium
rapid, short lasting change in the membrane potential of a neuron that can transmit a signal
resting potential
graded potential
action potential
inhibitory postsynaptic potential
the period during which a neuron cannot generate another action potential
depolarization phase
repolarization phase
absolute refractory period
relative refractory period
when the impusle jumps from one node of Ranvier to the next
continuous conduction
saltatory conduction
synaptic transmission
graded potential
neuroglia that form the myelin sheath in the central nervous system
astrocytes
oligodendrocytes
microglia
Schwann cells
During repolarization, which ion moves out of the cell to restore the resting membrane
potential?
sodium
potassium
sodium and potassium
calcium
a single presynaptic neuron, rapid firing signals to a postsynaptic neuron
temporal summation
spatial summation
excitatory postsynaptic potential
inhibitory postsynaptic potential
hyperpolarization
A change in a cells membrane potential that makes it more negative
A change in a cells membrane potential that makes it more positive
The membrane potential stays the same
The membrane potential becomes negative and positive
What is the primary function of the myelin sheath?
To generate action potentials
To nourish the neuron
To produce neurotransmitters
To increase the speed of the nerve impulses
What is the difference between repolarization and depolarization
repolarization makes the cell become less negative, while depolarization makes the cell become
more negative
both repolarization and depolarization make the cell become less negative
both repolarization and depolarization make the cell become more negative
repolarization makes the cell become more negative, while depolarization makes the cell become
less negative
What is the absolute refractory period
period before an intial action potential where neruon can't generate an pre-action potential
period that allows the neruon to always generate an action potential
period after the action potential where the neruone can't generate another action potential
period that repolarizes the action potential, allowing for the neuron to generate another action
potential
What is true about IPSP (inhibitory postsynpaptic potential)
increases the probability of the postsynaptic neuron to fire another action potential
the neurotransmitter binds to the inhibitory receptors of the postsynaptic neuron for ion permeability
exflux of calcium ions causes hyperpolarization
it does the exact same thing as EPSP except for using inhibitory receptors instead of exhibitory
receptors
A decrease in the membrane potential (making it less negative). It occurs when
sodium channels open, allowing Na influx during an action potential.
depolarization
hyperpolarization
repolarization
threshold potential
When the neuron is recovering but
can be excited with a stronger-than-normal stimulus
relative refractory period
absolute refractory period
hyperpolarization
repolarization
The energy-requiring movement of ions or molecules across a cell membrane against
their concentration gradient, often carried out by pumps
active transport
passive transport
axonal transport
exocytosis
Star-shaped glial cells in the CNS that support neuronal function, maintain the blood–
brain barrier, regulate ion balance, and contribute to repair processes.
astrocytes
Oligodendrocytes
Ependyma
Microglia
A layer of glial cells that lines the ventricles of the brain and the central canal of the
spinal cord. These cells contribute to the production and regulation of cerebrospinal
fluid (CSF)
Ependyma
Oligodendrocytes
Microglia
Astrocytes
