Question

Electrocardiograph records
a.Potential difference across cells of
myocardium
b.Volume of blood pumped
c.Ratio of systolic to diastolic blood
pressure
d.Electrical activity of Brain waves​

Answer 1

Answer:

Hey friend , your ans can be :

Explanation:

B.Volume of blood pumped

Answer 2

Answer:

Hey mate!

Your answer is option B