BIO 141 PROCTORED EXAM 3 (CH. 12,
13/14, & 15)
A common excitatory neurotransmitter that is also involved in memory and learning:
Serotonin
GABA
Glutamate
Norepinephrine
Acetylcholine - Correct Answers -Glutamate
A ganglion is a collection of:
Dendrites
Axons
Neuron Cell bodies
Synapses
Brain cells - Correct Answers -Neuron Cell bodies
A mood elevating neurotransmitter that often results in Parkinsonism when the neurons
that produce it are destroyed:
Serotonin
GABA
Aspartate
Norepinephrine
Dopamine - Correct Answers -Dopamine
A neuron has 8000 synapses on its dendrites and soma. 5000 are EPSPs and 3000 are
IPSPs. Assuming all the presynaptic neurons fire at the same time:
The neuron will depolarize
The neuron will repolarize
The neuron will hyperpolarize
An action potential will likely not occur - Correct Answers -The neuron will depolarize
A neuron has 8000 synapses on its dendrites and soma. Whether or not it fires an
action potential will depend on:
The net effect at the axon hillock
Temporal summation
Spatial summation
The neurotransmitters carried by the presynaptic neurons
All of the above - Correct Answers -All of the above
An EPSP would _______________the post-synaptic membrane.
,Depolarize
Repolarize
Hyperpolarize
Dissolve
All of the above - Correct Answers -Depolarize
An IPSP would _________________the post-synaptic membrane.
Depolarize
Repolarize
Hyperpolarize
Dissolve
All of the above - Correct Answers -Hyperpolarize
An IPSP would likely use:
Serotonin
GABA
Aspartate
Norepinephrine
Acetylcholine - Correct Answers -GABA
An action potential is propagated quicker using ___________propagation.
Continuous
Saltatory - Correct Answers -Saltatory
An adrenergic synapse uses:
GABA
Acetylcholine
Aspartate
Serotonin
Norepinephrine - Correct Answers -Norepinephrine
Choose the function the glial cells do NOT perform.
Insulation of the axon
Assisting healing of axon damage
Maintenance of the blood brain barrier
Communication processing
Secretion of cerebrospinal fluid - Correct Answers -Communication processing
Clean of cellular debris in the CNS is performed by:
Schwann cells
Microglia
Astrocytes
Oligodendrocytes
Ependymal cells - Correct Answers -Microglia
Continuous propagation occurs along axons that are:
, Myelinated
Unmyelinated - Correct Answers -Unmyelinated
Direct contact between neurons are only found in:
Chemical synapses
Electrical synapses - Correct Answers -Electrical synapses
Direct neuron contact:
Allows continuous local current flow
Decreases synaptic delay
Uses no neurotransmitter
May be seen in parts of the brain and eye
Are the least common synapse in the body
All of the above - Correct Answers -all of the above
****During hyperpolarization, which one is NOT true:
Potassium channels finish closing
The action potential is ending
The membrane potential is most negative
The neuron is returning to the resting potential
The neuron is in an absolute refractory period - Correct Answers -The neuron is in an
absolute refractory period
Formation of cerebrospinal fluid is performed by:
Schwann cells
Microglia
Astrocytes
Oligodendrocytes
Ependymal cells - Correct Answers -Ependymal cells
Formation of the myelin sheath in the peripheral nervous system is performed by:
Schwann cells
Microglia
Astrocytes
Oligodendrocytes
Ependymal cells - Correct Answers -Schwann cells
13/14, & 15)
A common excitatory neurotransmitter that is also involved in memory and learning:
Serotonin
GABA
Glutamate
Norepinephrine
Acetylcholine - Correct Answers -Glutamate
A ganglion is a collection of:
Dendrites
Axons
Neuron Cell bodies
Synapses
Brain cells - Correct Answers -Neuron Cell bodies
A mood elevating neurotransmitter that often results in Parkinsonism when the neurons
that produce it are destroyed:
Serotonin
GABA
Aspartate
Norepinephrine
Dopamine - Correct Answers -Dopamine
A neuron has 8000 synapses on its dendrites and soma. 5000 are EPSPs and 3000 are
IPSPs. Assuming all the presynaptic neurons fire at the same time:
The neuron will depolarize
The neuron will repolarize
The neuron will hyperpolarize
An action potential will likely not occur - Correct Answers -The neuron will depolarize
A neuron has 8000 synapses on its dendrites and soma. Whether or not it fires an
action potential will depend on:
The net effect at the axon hillock
Temporal summation
Spatial summation
The neurotransmitters carried by the presynaptic neurons
All of the above - Correct Answers -All of the above
An EPSP would _______________the post-synaptic membrane.
,Depolarize
Repolarize
Hyperpolarize
Dissolve
All of the above - Correct Answers -Depolarize
An IPSP would _________________the post-synaptic membrane.
Depolarize
Repolarize
Hyperpolarize
Dissolve
All of the above - Correct Answers -Hyperpolarize
An IPSP would likely use:
Serotonin
GABA
Aspartate
Norepinephrine
Acetylcholine - Correct Answers -GABA
An action potential is propagated quicker using ___________propagation.
Continuous
Saltatory - Correct Answers -Saltatory
An adrenergic synapse uses:
GABA
Acetylcholine
Aspartate
Serotonin
Norepinephrine - Correct Answers -Norepinephrine
Choose the function the glial cells do NOT perform.
Insulation of the axon
Assisting healing of axon damage
Maintenance of the blood brain barrier
Communication processing
Secretion of cerebrospinal fluid - Correct Answers -Communication processing
Clean of cellular debris in the CNS is performed by:
Schwann cells
Microglia
Astrocytes
Oligodendrocytes
Ependymal cells - Correct Answers -Microglia
Continuous propagation occurs along axons that are:
, Myelinated
Unmyelinated - Correct Answers -Unmyelinated
Direct contact between neurons are only found in:
Chemical synapses
Electrical synapses - Correct Answers -Electrical synapses
Direct neuron contact:
Allows continuous local current flow
Decreases synaptic delay
Uses no neurotransmitter
May be seen in parts of the brain and eye
Are the least common synapse in the body
All of the above - Correct Answers -all of the above
****During hyperpolarization, which one is NOT true:
Potassium channels finish closing
The action potential is ending
The membrane potential is most negative
The neuron is returning to the resting potential
The neuron is in an absolute refractory period - Correct Answers -The neuron is in an
absolute refractory period
Formation of cerebrospinal fluid is performed by:
Schwann cells
Microglia
Astrocytes
Oligodendrocytes
Ependymal cells - Correct Answers -Ependymal cells
Formation of the myelin sheath in the peripheral nervous system is performed by:
Schwann cells
Microglia
Astrocytes
Oligodendrocytes
Ependymal cells - Correct Answers -Schwann cells
