Prep for USMLEPrep for USMLE Forum
   Forum    Step 1  Step 2 CK Step 2 CS Step 3  Match  IMGs Resources Search






Previous Topic | Next Topic  direct coupled q 




 
Kaplan Qbank USMLE



Author8 Posts
  #1

WOF CNS receptors is directly coupled to an ion channel is is not involved in second messengr systems?

a. alpha (NE)

b. beta (NE)

c. mu (beta endorphin)

d. GABA

e. M (ACh)

f. 5HT2 (serotonin)


___________________
The Key to Succeed is Patience.

  #2

answer-c

___________________
Smell the coffee! "Is That an Osler move??"

  #3

mad

___________________
The Key to Succeed is Patience.

  #4

is this GABA

  #5

GABA - GABA-A opens Cl- ion channels causing hyperpolarization; and GABA-B opens K+-ion channels causing hyperpolarization as well.

But doesn't Ach act via Na+channels as well?


  #6

its D..GABA...and huzefa the choice E is not just Ach its muscarinic...M1 and M3 is thru Gq and M2 is thru Gi

  #7

Thx doc179; I am thinking about the action of Ach at the NMJ, aren't I?

  #8

good question.

___________________
It has been a looooong hard journey but I am inches away from my destination...







You don't have permission to post.




Login or Register to post messages in this topic





















Contact | Leaders | Disclaimer | Privacy

Copyright @ Prep for USMLE. All rights reserved.