ICSE BoardEnglish MediumSTD 6BIOLOGYThe Circulatory System2 Marks
Question
What is stethoscope? Explain.
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Answer
The pulse in humans can be measured by using an instrument called stethoscope. It is a device that amplifies the sound of a heartbeat and is used to hear heartbeats in the chest. It consists of three parts:
A chest piece, which is sensitive to heartbeats.
Two earpieces.
A tube joining the chest piece and the earpieces
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