How does the menstrual cycle typically last in a healthy woman?

The menstrual cycle in a healthy woman typically lasts anywhere from 21 to 35 days. This range accounts for the variability that exists among individuals, as cycle lengths can differ based on factors such as hormonal balance, health status, and age. While some women may have cycles that consistently fall within a tighter range, such as 21 to 28 days or 28 to 35 days, the broader range offered by the correct choice recognizes the normal differences found in menstruating individuals.

Having a cycle duration that spans from 21 to 35 days indicates that while most women may experience cycles that are around 28 days, some will have shorter or longer cycles that still fall within the spectrum of what is considered normal. This variability is important in clinical settings, as it supports the understanding of menstrual health and can aid in differentiating between normal variations and potential issues that might require attention.