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Author Question: If the SA node fails, the next pacemaker to fire will be the: a. AV node. b. AV junction. c. ... (Read 130 times)

fagboi

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on: Jul 3, 2018
If the SA node fails, the next pacemaker to fire will be the:
 
  a. AV node.
  b. AV junction.
  c. bundle of His.
  d. Purkinje network.

Question 2

Which of the following chemical agents binds to acetylcholinestrase inhibiting the breakdown of acetylcholine at autonomic nervous system synapses?
 
  a. Chlorine
  b. Sarin
  c. Phosgene
  d. Gamma radiation


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brbarasa

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Reply #1 on: Jul 3, 2018
Answer to Question 1

B

Answer to Question 2

b
Rationale: a. Chlorine is a chocking agent which causes pulmonary destruction.
b. Correct. Sarin is an organophosphate that interacts with acetylcholinestrase .
c. Phosgene is a chocking agent which causes pulmonary destruction.
d. Gamma radiation is a radiological agent. Its effects are widespread.


fagboi

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Reply 2 on: Jul 3, 2018
:D TYSM

nguyenhoanhat

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Reply 3 on: Yesterday
Gracias!

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