Question

In a normal adult human, the average cardiac output (stroke volume) is

• A. 47 ml
• B. 70 ml
• C. 5 litre
• D. 3.3 litre

Answer 1

Answer: (B)

70 ml

Stroke volume is the amount of blood ejected by the left ventricle in one contraction. The stroke volumes for each ventricle are generally equal, both being approximately 70 mL in a healthy 70-kg man.