8856921
Descrição
Questão 1
Questão
Acetyl Choline always produces an EPSP.
Responda
- True
- False
Questão 2
Questão
Glutamate produces an IPSP.
Responda
- True
- False
Questão 3
Questão
Gaba produces an IPSP.
Responda
- True
- False
Questão 4
Questão
Choose the correct statements about methamphetamine.
Responda
-
It increases levels of noradrenaline, dopamine, and serotonin.
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It blocks the reuptake of noradrenaline, dopamine, and serotonin.
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It acts in reward centres and as such is highly addictive.
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It stimulates the parasympathetic nervous system.
Questão 5
Questão
Choose the incorrect statement.
Responda
-
Acetylcholine activates stimulus gated Na+ channels, and can be found in NMJs and the brain.
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Glutamate activates stimulus gated Na+ and Ca+ channels, and is the most common excitatory neurotransmitter in the CNS.
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GABA activates Na+ and Cl- channels, and is the most common inhibitory neurotransmitter in the CNS.
Questão 6
Questão
A neuron can have >50,000 synapses at its input zone.
Responda
- True
- False
Questão 7
Questão
Local synaptic potential (EPSPs and IPSPs) summate.
Spatial summation is integration of inputs from [blank_start]different synaptic knobs[blank_end]. (Different localisation/[blank_start]local polarisations[blank_end] of input zone.)
Temporal summation is the integration of inputs from the [blank_start]same synaptic knob[blank_end] but from different, [blank_start]short time intervals[blank_end].
Responda
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different synaptic knobs
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local polarisations
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same synaptic knob
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short time intervals
Questão 8
Questão
Local polarisations last longer than action potentials. This allows temporal summation to be effective.
Responda
- True
- False
Questão 9
Questão
Converging networks can amplify signals. They have few control points and can therefore allow precise control.
Diverging networks provide redundancy, making sure there is a 'back up' should another transmission fail and assuring an action is carried out.
Responda
- True
- False
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