Mechanical Properties of the Heart
Authored by RALPH JACINTO
Biology, Science
University - Professional Development
Used 15+ times
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9 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • Ungraded
Were you able to watch the videos in Canvas?
Yes
Yes, but did not finish
No
2.
REORDER QUESTION
1 min • 5 pts
Arrange the steps in the excitation-contraction coupling of cardiac muscles:
Actin myosin binding occurs.
Free Ca2+ binds to tropC exposing the myosin-binding site.
DHP receptors open to allow Ca2+ influx.
Ca2+ influx triggers opening of ryanodine receptors.
Action potentials traveling down the T-tubules depolarize the cell membrane.
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following exhibits positive inotropy?
beta 1 receptor activation
beta 1 receptor inhibition
muscarinic receptor activation
4.
OPEN ENDED QUESTION
1 min • Ungraded
What will be the effect of Na+/K+-ATPase inhibitor on the contraction of cardiac muscles?
Evaluate responses using AI:
OFF
5.
REORDER QUESTION
2 mins • 5 pts
Arrange the events in cardiac cycle that occurs after atrial systole.
Ejection phase
Rapid ventricular filling
Isovolumetric contraction
Isovolumetric relaxation
Diastasis
6.
MATCH QUESTION
1 min • 4 pts
Match the heart sounds with their causes.
Rush of blood during rapid ventricular filling
S4
Vibration produced by the atrial muscles when contracting against noncompliant ventricles
S1
Closure of SL valves
S3
Closure of AV valves
S2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Can we give beta blockers on patients with heart failure?
Yes
No
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