Question

В спокойном состоянии сердечный цикл продолжается 0,8 сек., сокращение предсердий продолжается 0.1 сек., желудочков-0,3 сек., а в течение 0,4 сек., сердце отдыхает. Сколько времени работает и отдыхает сердце в течении суток? можно с решением пж​

Answer 1

Ответ:

Сердце отдыхает столько, сколько и работает

Answer 2

Calculation of Heart Work and Rest Time

To calculate the total time the heart works and rests in a day, we need to consider the duration of each phase of the cardiac cycle.

According to the information provided, the duration of each phase is as follows: - Heart cycle: 0.8 seconds - Atrial contraction: 0.1 seconds - Ventricular contraction: 0.3 seconds - Heart rest: 0.4 seconds

To determine the time the heart works and rests in a day, we need to calculate the number of cardiac cycles in a day and multiply it by the duration of each phase.

Calculation:

1. Calculate the number of cardiac cycles in a day: - There are 24 hours in a day. - Each hour has 60 minutes. - Each minute has 60 seconds. - Therefore, the total number of seconds in a day is 24 * 60 * 60 = 86,400 seconds.

- To find the number of cardiac cycles in a day, divide the total number of seconds in a day by the duration of one cardiac cycle: - Number of cardiac cycles in a day = 86,400 seconds / 0.8 seconds (duration of one cardiac cycle)

2. Calculate the time the heart works and rests in a day: - Multiply the number of cardiac cycles in a day by the duration of each phase: - Time the heart works in a day = Number of cardiac cycles in a day * (duration of atrial contraction + duration of ventricular contraction) - Time the heart rests in a day = Number of cardiac cycles in a day * duration of heart rest

Let's calculate the values:

1. Number of cardiac cycles in a day: - Number of cardiac cycles in a day = 86,400 seconds / 0.8 seconds = 108,000 cycles/day

2. Time the heart works and rests in a day: - Time the heart works in a day = 108,000 cycles/day * (0.1 seconds + 0.3 seconds) = 43,200 seconds/day - Time the heart rests in a day = 108,000 cycles/day * 0.4 seconds = 43,200 seconds/day

Therefore, the heart works for approximately 43,200 seconds and rests for approximately 43,200 seconds in a day.

Please note that the above calculations are based on the provided information and assumptions.