Biology, asked by keerthikeerthana2928, 16 hours ago

write the procedure do you follow to prepare stethoscope in your school lab.

Answers

Answered by geetabalhara1990

1

Answer:

Take a matchstick and a shirt button. Remove the carbon part of the matchstick. Insert the match stick in the button. Place this button on the wrist. The movements of the wrist due to the pulse can be recorded. This pulse is same as the heart beat. Thus, the heartbeat can be recorded by this method.

Explanation:

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