What is the normal stroke volume (SV) in milliliters?

The normal stroke volume, which is the amount of blood ejected by the heart during each heartbeat, typically averages around 70 milliliters in a healthy adult. This value is significant not only because it reflects the efficiency of the heart's pumping action but also because it is a crucial component of cardiac output, which is the volume of blood the heart pumps per minute.

Understanding stroke volume is essential in areas like exercise physiology and clinical settings, where evaluating cardiac function can help in assessing an individual's fitness level or in diagnosing cardiovascular issues. The normal range for stroke volume can vary based on several factors such as age, gender, size, and overall cardiovascular fitness, but 70 milliliters serves as a widely accepted average for adults. Thus, this value provides a useful benchmark in clinical assessments and exercise testing.