Biology, asked by sricharan629, 9 months ago

In the year 1816, he discovered the Stethoscope. Before the discovery of stethoscope doctors

used to hear heart beat by keeping ear on the chest of the patient. He found that paper tube

helps to hear the heart beat perfectly.​

Answers

Answered by St08
3

Answer:

Can I know what ur ques is?

Answered by booklover41
0

Answer:

yes u are right mate.... anything else

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