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