BIO161 Exam 3
1. what is secretion
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,ANSWER converting the electrical signal from the presynaptic neuron to a chemical signal in the synapse
and back to an electrical signal in the postsynaptic neuron
2. how are neurotransmitters transported down an axon?
ANSWER vesicles
3. what neurotransmitters are derived from amino acids
ANSWER dopamine and norepinephrine
4. what neurotransmitters are derived from chemicals or gas
ANSWER acetylcholine
5. what do the vesicles go through to travel down the axon
ANSWER microtubles
6. neurotransmitters that cause depolarization of postsynaptic neuron
ANSWER excitatory postsynaptic potential (EPSP)
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, 7. neurotransmitters that cause hyperpolarization of postsynaptic neuron
ANSWER in- hibitory postsynaptic potential (IPSP)
8. what is summation
ANSWER one component of integration; interneurons and motor neurons receiving information from multiple
cells and summing the charge to determine if an action potential is initiated
9. temporal summation
ANSWER one presynaptic neuron sends multiple signals
10. spatial summation
ANSWER multiple presynaptic neurons send signals
11. how does the brain detect the strength of the stimulus
ANSWER by how many action potentials occur; the frequency of action potentials
12. frequency of action potentials
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1. what is secretion
1/
27
,ANSWER converting the electrical signal from the presynaptic neuron to a chemical signal in the synapse
and back to an electrical signal in the postsynaptic neuron
2. how are neurotransmitters transported down an axon?
ANSWER vesicles
3. what neurotransmitters are derived from amino acids
ANSWER dopamine and norepinephrine
4. what neurotransmitters are derived from chemicals or gas
ANSWER acetylcholine
5. what do the vesicles go through to travel down the axon
ANSWER microtubles
6. neurotransmitters that cause depolarization of postsynaptic neuron
ANSWER excitatory postsynaptic potential (EPSP)
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27
, 7. neurotransmitters that cause hyperpolarization of postsynaptic neuron
ANSWER in- hibitory postsynaptic potential (IPSP)
8. what is summation
ANSWER one component of integration; interneurons and motor neurons receiving information from multiple
cells and summing the charge to determine if an action potential is initiated
9. temporal summation
ANSWER one presynaptic neuron sends multiple signals
10. spatial summation
ANSWER multiple presynaptic neurons send signals
11. how does the brain detect the strength of the stimulus
ANSWER by how many action potentials occur; the frequency of action potentials
12. frequency of action potentials
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27
