At Tanner stage 2, what developmental changes occur in females?

At Tanner stage 2 of female sexual maturation, one of the key developmental changes is the formation of breast buds and the beginning of areola development. This stage typically occurs around ages 9 to 11 and marks a significant point in breast development. At this stage, the breasts start to grow under the influence of hormonal changes, particularly due to increased estrogen levels. The presence of breast buds is the first visible sign of breast development.

Other stages involve further changes such as the elevation of the nipples and areola, the onset of menstruation, and the growth of pubic hair; however, these occur at different Tanner stages beyond stage 2. Understanding these developmental milestones is crucial for recognizing normal patterns of puberty in females.