Exam 39: Information Flow and the Neuron

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In an effort to determine the mechanism of neuronal signaling, Otto Loewi isolated ____.

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The refractory period of a neuronal plasma membrane is important because it ____. ​

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Match the descriptions with the most appropriate term. All terms will be used more than once.
Premises:
the phase of an action potential when the membrane potential becomes more positive
Responses:
depolarization
repolarization
hyperpolarization
Correct Answer:
Verified
Premises:
Responses:
the phase of an action potential when the membrane potential becomes more positive
depolarization
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Which category of organic macromolecule allows myelinated sheaths to act as electrical insulators? ​

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Whether a neurotransmitter is inhibitory or excitatory depends on the type of receptor it binds to on the postsynaptic neuron.

(True/False)
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The neurotransmitter receptor research of Jean-Luc Eiselé and his coworkers showed that ____. ​

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After burning your hand on a hot burner, which neurotransmitter will most likely be released from the pain receptors? ​

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In terms of changes in membrane potential, compare and contrast action potentials and graded potentials.

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Neurotransmitters are stored in vesicles located within axon terminals .

(True/False)
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The spaces between adjacent Schwann cells are called ____. ​

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In vertebrates, the neurotransmitter acetylcholine ____. ​

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Action potentials are propagated in a one-way direction down a neuronal plasma membrane because ____. ​

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   Figure 39.2  Answer the questions using the accompanying figure. Identify the structures at a synapse.
Figure 39.2
Answer the questions using the accompanying figure. Identify the structures at a synapse.
Premises:
receptors
Responses:
D
C
B
Correct Answer:
Verified
Premises:
Responses:
receptors
D
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Neuropeptide neurotransmitters ____. ​

(Multiple Choice)
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   Figure 39.2  Answer the questions using the accompanying figure. Identify the structures at a synapse.
Figure 39.2
Answer the questions using the accompanying figure. Identify the structures at a synapse.
Premises:
synaptic vesicles
Responses:
E
B
D
Correct Answer:
Verified
Premises:
Responses:
synaptic vesicles
E
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The magnitude of an action potential ____ as it is propagated down an excitable membrane due to the ____ principle. ​

(Multiple Choice)
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The binding of a neurotransmitter to ligand-gated Na+ channels will cause ____ in the postsynaptic membrane. ​

(Multiple Choice)
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Match the descriptions with the most appropriate term. All terms will be used more than once.
Premises:
an EPSP, for example
Responses:
depolarization
hyperpolarization
repolarization
Correct Answer:
Verified
Premises:
Responses:
an EPSP, for example
depolarization
(Matching)
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What removes Ca2+ from the inside of an axon terminal of a chemical synapse after an electrical impulse has passed? ​

(Multiple Choice)
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Despite recent advances, ___ is/are needed to revolutionize the field of neuroscience and allow for better understanding of neural networking

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