Question

what thing is measure our hard beat​

Answer 1

Answer:

Electrocardiogram

Explanation:

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Answer 2

Answer:

At the wrist, lightly press the index and middle fingers of one hand on the opposite wrist, just below the base of the thumb. At the neck, lightly press the side of the neck, just below your jawbone. Count the number of beats in 15 seconds, and multiply by four. That's your heart rate. Also doctors use stethoscope is an acoustic medical device for auscultation, or listening to internal sounds of an animal

Explanation:

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