What is the end-diastolic volume (EDV)?

What is the end-diastolic volume (EDV)?

• A. Approximately 130 mL
• B. Approximately 70 mL
• C. Approximately 50 mL
• D. Approximately 150 mL

Answer: (A)

End-diastolic volume is the amount of blood in the ventricle at the end of filling, right before the heart contracts. In a healthy adult, the left ventricle typically fills to about 120–130 mL, so around 130 mL is the standard EDV value. This helps explain why the ~130 mL option is the best choice. Think of other related numbers: the amount ejected each beat (stroke volume) is about 70 mL, leaving roughly 50 mL after contraction (end-systolic volume). An EDV around 150 mL would be higher than the typical resting filling volume.

End-diastolic volume is the amount of blood in the ventricle at the end of filling, right before the heart contracts. In a healthy adult, the left ventricle typically fills to about 120–130 mL, so around 130 mL is the standard EDV value. This helps explain why the ~130 mL option is the best choice.

Think of other related numbers: the amount ejected each beat (stroke volume) is about 70 mL, leaving roughly 50 mL after contraction (end-systolic volume). An EDV around 150 mL would be higher than the typical resting filling volume.