Biology, 23.11.2019 06:31 gokusandjimp6blzh

During an examination a doctor hears is fluttering in the first part of the heartbeat this likely indicates a problem with which part of the heart?

a. the right and left atria
b. the right and left ventricles
c. the valve is between the atria in the ventricles
d. the valves between the atria and the body

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