Experts pls clear my doubt question
Dear Student,
The delay in transmission of impulse from SAN to ventricles provided by AVN prevents simultaneous contraction of ventricles and auricles. This allows atria to empty completely before ventricles start contraction. Hence the correct option is B.
Regards
The delay in transmission of impulse from SAN to ventricles provided by AVN prevents simultaneous contraction of ventricles and auricles. This allows atria to empty completely before ventricles start contraction. Hence the correct option is B.
Regards