536731
Descrição
Quiz por gina_evans0312, atualizado more than 1 year ago
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Criado por gina_evans0312
quase 11 anos atrás
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Questão 1
Questão
What stimulates the secretion of the CA's?
Responda
-
An action potential
-
An increase in Noradrenaline
-
Nerve damage
Questão 2
Questão
Once the membrane has been depolarised, what voltage gated channels open?
Responda
-
Sodium
-
Calcium
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Potassium
Questão 3
Questão
The influx of ions into the cell signals secretion by exocytosis
Responda
- True
- False
Questão 4
Questão
What is stored in Catecholamine vesicles, along with the CA?
Responda
-
ATP
-
ADP
-
Fromogranin
-
Chromogranin
Questão 5
Questão
ATP is -ve at body pH, whilst CA's are +ve
Responda
- True
- False
Questão 6
Questão
Why are CA's stored with these other substances?
Responda
-
They keep the CA's out of solution
-
They keep the CA's in solution
-
Which helps prevent vesicle lysis due to osmotic pressure
Questão 7
Questão
ATP can also act as a neurotransmitter
Responda
- True
- False
Questão 8
Questão
When concentrations of CA in the synapse are low, Alpha2 Adrenergic receptors are activated,
Responda
- True
- False
Questão 9
Questão
B2 receptors _ adenylate cyclase, which _ the production of cAMP, which _ the influx of ions
Responda
-
Stimulates, increases, increases
-
Stimulates, increases, decreases
-
Inhibits, increases, increases
-
Inhibits, decreases, decreases
Questão 10
Questão
A2 adrenergic receptors have the opposite effect of B2 adrenergic receptors
Responda
- True
- False
Questão 11
Questão
Re-uptake Method 1 is presynaptic, and mediated by what?
Responda
-
Active transport
-
Diffusion
-
A Na+/K+ pump
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Na+ channel
Questão 12
Questão
Uptake Method 2 is extraneuronal and is used to...
Responda
-
Destroy excess adrenaline
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Secrete adrenaline into the bloodstream
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Stimulate separate neurones
Questão 13
Questão
Monoamine oxidase is found in the RER and interacts with cytoplasmic neurotransmitter
Responda
- True
- False
Questão 14
Questão
What is the role of monoamine oxidase (3 steps)?
Responda
-
Converts the amine --> aldehyde
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Reduction of Aldehyde --> Acid
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Reduction of Aldehyde --> Alcohol
Questão 15
Questão
Which enzyme uses S-Adenosty Methionine to methylate Neurotransmitters?
Responda
-
Monoamine Oxidase
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Catcheol-O-Methyl Transferase
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Catecholamine Methylase
Questão 16
Questão
What is the final produce of the Oxidative pathway of Monoamine Oxidase?
Responda
-
VMA
-
MOPEG
Questão 17
Questão
What is the final produce of the Reductive pathway of Monoamine Oxidase?
Responda
-
VMA
-
MOPEG
Questão 18
Questão
In peripheral tissue, the oxidative pathway predominates. In the brain, the reduction pathway predominates.
Responda
- True
- False
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