What term describes the first reproductive cycle in females?

The term that describes the first reproductive cycle in females is menarche. This event marks the onset of menstrual cycles, indicating that a female's body is beginning to mature reproductively. Menarche typically occurs during puberty, usually between the ages of 9 and 16, and is a significant milestone in female development, signaling the capability of reproduction.

Menarche involves the first occurrence of menstruation, which is part of the menstrual cycle, and it is important in understanding female reproductive health. The onset is influenced by various factors, including genetics, nutrition, and overall health.

Understanding menarche also provides insight into the broader context of female reproductive physiology, including subsequent cycles of ovulation and menstruation that follow after menarche has occurred.