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Regulating CA Secretion

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Year 2 Quiz on Regulating CA Secretion, created by gina_evans0312 on 09/02/2014.
gina_evans0312
Quiz by gina_evans0312, updated more than 1 year ago
gina_evans0312
Created by gina_evans0312 almost 11 years ago
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Resource summary

Question 1

Question
What stimulates the secretion of the CA's?
Answer
  • An action potential
  • An increase in Noradrenaline
  • Nerve damage

Question 2

Question
Once the membrane has been depolarised, what voltage gated channels open?
Answer
  • Sodium
  • Calcium
  • Potassium

Question 3

Question
The influx of ions into the cell signals secretion by exocytosis
Answer
  • True
  • False

Question 4

Question
What is stored in Catecholamine vesicles, along with the CA?
Answer
  • ATP
  • ADP
  • Fromogranin
  • Chromogranin

Question 5

Question
ATP is -ve at body pH, whilst CA's are +ve
Answer
  • True
  • False

Question 6

Question
Why are CA's stored with these other substances?
Answer
  • They keep the CA's out of solution
  • They keep the CA's in solution
  • Which helps prevent vesicle lysis due to osmotic pressure

Question 7

Question
ATP can also act as a neurotransmitter
Answer
  • True
  • False

Question 8

Question
When concentrations of CA in the synapse are low, Alpha2 Adrenergic receptors are activated,
Answer
  • True
  • False

Question 9

Question
B2 receptors _ adenylate cyclase, which _ the production of cAMP, which _ the influx of ions
Answer
  • Stimulates, increases, increases
  • Stimulates, increases, decreases
  • Inhibits, increases, increases
  • Inhibits, decreases, decreases

Question 10

Question
A2 adrenergic receptors have the opposite effect of B2 adrenergic receptors
Answer
  • True
  • False

Question 11

Question
Re-uptake Method 1 is presynaptic, and mediated by what?
Answer
  • Active transport
  • Diffusion
  • A Na+/K+ pump
  • Na+ channel

Question 12

Question
Uptake Method 2 is extraneuronal and is used to...
Answer
  • Destroy excess adrenaline
  • Secrete adrenaline into the bloodstream
  • Stimulate separate neurones

Question 13

Question
Monoamine oxidase is found in the RER and interacts with cytoplasmic neurotransmitter
Answer
  • True
  • False

Question 14

Question
What is the role of monoamine oxidase (3 steps)?
Answer
  • Converts the amine --> aldehyde
  • Reduction of Aldehyde --> Acid
  • Reduction of Aldehyde --> Alcohol

Question 15

Question
Which enzyme uses S-Adenosty Methionine to methylate Neurotransmitters?
Answer
  • Monoamine Oxidase
  • Catcheol-O-Methyl Transferase
  • Catecholamine Methylase

Question 16

Question
What is the final produce of the Oxidative pathway of Monoamine Oxidase?
Answer
  • VMA
  • MOPEG

Question 17

Question
What is the final produce of the Reductive pathway of Monoamine Oxidase?
Answer
  • VMA
  • MOPEG

Question 18

Question
In peripheral tissue, the oxidative pathway predominates. In the brain, the reduction pathway predominates.
Answer
  • True
  • False
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