According to the Fick equation,if cardiac output doubles during exercise and the arterial-mixed venous oxygen difference remains constant,body oxygen consumption would
A)remain constant
B)decrease by 50%
C)increase by 100%
D)none of the above answers are correct

Question

Quizplus · Accepted Answer

According to the Fick equation, oxygen consumption is directly proportional to cardiac output and the arterial-mixed venous oxygen difference. If cardiac output doubles during exercise and the arterial-mixed venous oxygen difference remains constant, then body oxygen consumption would also double (100% increase). This is because the increased blood flow would provide more oxygen to the tissues, and the constant arterial-mixed venous oxygen difference would ensure that the tissues could extract the same amount of oxygen from the blood.

According to the Fick Equation,if Cardiac Output Doubles During Exercise