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




Prep4USMLE Forum » USMLE Step 1 Forum » Pharmacology Forum



Previous Topic | Next Topic  nbme3 


Login or Register to post messages 




Rated:
  • 0/5
  • 1
  • 2
  • 3
  • 4
  • 5
(0 votes)
Author7 Posts
Allison
Forum Senior
avatar

Topics: 20
Posts: 117
11/18/06 - 07:36 AM       #1

Calcium channel blockers are effective antiarrhythmic agents because they inhibit calcium influx into which of the following structures?

A) Atrioventricular node
B) Bundle of His
C) Cardiac muscle of the atria
D) Cardiac muscle of the ventricles
E) Smooth muscle in the coronary arteries


fox
Forum Guru
avatar

Topics: 70
Posts: 727
11/18/06 - 11:19 AM       #2

A?

___________________
Aim High

yasmeen
Forum Guru

Topics: 72
Posts: 950
11/18/06 - 09:53 PM       #3

A

vaibhavbora
Forum Elite
avatar

Topics: 20
Posts: 389
10/19/08 - 02:00 AM       #4

A) Atrioventricular node


___________________
VB

brainstem
Forum Guru
avatar

Topics: 9
Posts: 688
10/19/08 - 02:23 AM       #5

A - ccb like verapamli, diltazem act on pacemaker cells - av node.

___________________
how high u go depends on how hard u try.

Ferritin
Forum Senior
avatar

Topics: 22
Posts: 151
10/22/08 - 07:26 AM       #6

hmmm wonder abt the SA note arent they the main pacemakers? or am i being dumb as usual?

target
Forum Guru
avatar

Topics: 5
Posts: 914
10/22/08 - 08:00 AM       #7

Yup

A - Phase 4 slow ca current (pacemaker current)


___________________
In Him I trust !









Login or Register to post messages






show Similar forum topics

nbme3
nbme3
nbme3
nbme3
show Related resources













Contact us | Terms & Conditions | Privacy Policy

Copyright @ Prep for USMLE. All rights reserved.