PATHOLOGY

Detailed explanation-1: -In a normal healthy adult, the heart beats 60-100 times in a minute. With each beat, the heart pumps 70 millilitres of blood out of the heart. It can move 5 to 7 litres of blood in one minute and 7600 litres per day. Hence about 70 ml of blood is pumped into the arteries during each heartbeat.

Detailed explanation-2: -Cardiac output in humans is generally 5-6 L/min in an at-rest to more than 35 L/min in elite athletes during exercise. HR is determined by signals from the sinoatrial node, which automatically depolarizes at an intrinsic rate of 60 to 100 times each minute.

Detailed explanation-3: -In the given question, it is given that, in each heartbeat, the heart pumps volume of 80ml of blood at an average pressure of 100 mm of Hg. In this question, we have to find the power output of the heart. We know that work done is nothing but pressure times volume. Hence, the power output of heart is $1.06 W$ .

Detailed explanation-4: -So, the correct answer is ‘5040 ml/min’.