8856921
Descripción
Pregunta 1
Pregunta
Acetyl Choline always produces an EPSP.
Respuesta
- True
- False
Pregunta 2
Pregunta
Glutamate produces an IPSP.
Respuesta
- True
- False
Pregunta 3
Pregunta
Gaba produces an IPSP.
Respuesta
- True
- False
Pregunta 4
Pregunta
Choose the correct statements about methamphetamine.
Respuesta
-
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.
Pregunta 5
Pregunta
Choose the incorrect statement.
Respuesta
-
Acetylcholine activates stimulus gated Na+ channels, and can be found in NMJs and the brain.
-
Glutamate activates stimulus gated Na+ and Ca+ channels, and is the most common excitatory neurotransmitter in the CNS.
-
GABA activates Na+ and Cl- channels, and is the most common inhibitory neurotransmitter in the CNS.
Pregunta 6
Pregunta
A neuron can have >50,000 synapses at its input zone.
Respuesta
- True
- False
Pregunta 7
Pregunta
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].
Respuesta
-
different synaptic knobs
-
local polarisations
-
same synaptic knob
-
short time intervals
Pregunta 8
Pregunta
Local polarisations last longer than action potentials. This allows temporal summation to be effective.
Respuesta
- True
- False
Pregunta 9
Pregunta
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.
Respuesta
- True
- False
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