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Before inventing stethoscope, how they h...

Before inventing stethoscope, how they hear heart beat?

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Who invented stethoscope?

What is the reason for the heart beat?

Who coinded the name form paper/ bamboo tube to hear heart beat?

You heared a rhythmic sound from your heart after running. That means you know that your heart is beating. Then how will your pulse be?

Is there any relation between weight of the body and heart beat rate ?

Observe the table given below and analyse the questions. (i) What is the relation between weight of the body and weight of the heart of an animal? (ii) What is the relationship between weight of the heart and rate of heart beat?

What is weight of human heart and heart beat rate ?

In a stethoscope, sound of heart beats travel through stethoscope tube

Answer the following question Make use of the Stethoscope made by you to measure the number of heart beats of five of your friends and note down your findings in the table given.

Which animal has the highest heart beat rate ?