Class 11 Biology Body Fluids and Circulations Regulation of cardiac activity

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The strength of ventricular contraction increases when $SAN$ is stimulated by

A
Vagus nerve
B
Parasympathetic nerve
C
Sympathetic nerve
D
All of these

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Class 11 Questions

Class 11

Biology Questions

Chapter

Body Fluids and Circulations

Subtopic

Regulation of cardiac activity

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