Question

В состоянии покоя сердце здорового человека сокращается в среднем 75 раз в минуту. сколько часов в сутки при таком ритме оно находится в состоянии общей паузы необходимы математические расчеты

Answer 1

Период, охватывающий одно сокращение и расслабление сердца, называют сердечным циклом. Сердце человека сокращается примерно 75 раз в минуту. Каждый цикл длится 0,8 с и состоит из трёх фаз: систолы предсердий, систолы желудочков и общей паузы. Продолжительность общей паузы 0,4 секунды. 
0,4 * 75=30 с
То есть половину минуты, соответственно в состоянии общей паузы сердце находится 12 ч в сутки или
30*1440=43200 с
43200/60/60=12 ч

Answer 2

Heart Rate and Resting Time Calculation

The average heart rate of a healthy person at rest is approximately 75 beats per minute To calculate the amount of time the heart is in a state of rest in a day, we can use some mathematical calculations.

Let's break it down step by step:

1. Calculate the number of beats per hour: - 75 beats per minute x 60 minutes = 4,500 beats per hour.

2. Calculate the number of beats per day: - 4,500 beats per hour x 24 hours = 108,000 beats per day.

3. Calculate the time spent in a state of rest: - Since the heart is in a state of rest during the pause between beats, we can assume that the heart is at rest for half of the time between beats. - The time between beats can be calculated by dividing the total number of beats per day by the heart rate: - 108,000 beats per day / 75 beats per minute = 1,440 minutes between beats.

4. Calculate the time spent in a state of rest per day: - Since the heart is at rest for half of the time between beats, we can divide the time between beats by 2: - 1,440 minutes between beats / 2 = 720 minutes at rest.

To convert the time spent at rest from minutes to hours, we can divide by 60: - 720 minutes at rest / 60 minutes = 12 hours at rest.

Therefore, at an average heart rate of 75 beats per minute, the heart of a healthy person is in a state of rest for approximately 12 hours in a day.

Please note that these calculations are based on average values and individual variations may occur.