PATHOLOGY MCQ
HEART
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An adult’s heart beats ____ times per minute.
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72
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100
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140
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None of the above
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Explanation:
Detailed explanation-1: -The human heart beats about 72 times in a minute. Therefore, frequency of our heart beat is 72/60 or 1.2 Hz. This frequency is much less than the audible range. It is a blessing in disguise that we cannot hear sound produced by the heart, movement of muscles and body organs.
Detailed explanation-2: -Frequency means number of events in a given time period. Hence frequency of heart beat is 72 per minute. In SI unit it is 72/60=1. 2 per second.
Detailed explanation-3: -The power of heart which beats 72 times in a minute is 1.2 kW.
There is 1 question to complete.