CVS PHYSIOLOGY

Quiz
•
Specialty
•
University
•
Hard
S Vicky
Used 12+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Contractility and stroke volume increases in
β -blockade
Acidosis
↓ extracellular Na+
↓ intracellular Na+
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phase 2 of action potential is due to
Sodium Influx
Potassium Influx
Calcium Influx
Chloride Influx
Answer explanation
Phase 2 is plateau phase and is due to calcium Influx.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following about Aortic regurgitation is true ?
End diastolic volume increases
Force of contraction decreases
Stroke volume decreases
Both b and c
Answer explanation
Force of contraction and stroke volume increases by Frank starling mechanism.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Normal duration of PR interval is
0.6 - 1 sec
0.12 - 0.20 sec
0.35 - 0.45 sec
< 0.44 sec
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Speed of conduction is faster in
SA Node
AV Node
Ventricular Muscle
Purkinje fibres
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pacemaker potential is due to
Fast Na+ channel
Decrease in K+ Permeability
Slow Ca+ channel
Rapid repolarization
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
P wave is absent in
Atrial fibrillation
Atrial flutter
CCF
PSVT
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