Explain that oestrogen controls female secondary sexual characteristics at puberty and is involved in the menstrual cycle.

In the subtopic Hormones in human reproduction, this learning objective focuses on explain that oestrogen controls female secondary sexual characteristics at puberty and is involved in the menstrual cycle. Within Hormonal coordination in humans, students should explain this idea in the exact curriculum context rather than as an isolated fact. Approved keywords for this objective include menstrual cycle, oestrogen, and puberty. Oestrogen means a hormone produced by the ovaries that controls female secondary sexual characteristics during puberty and plays a key role in the menstrual cycle. Avoid students often think that oestrogen only affects the menstrual cycle and do not recognize its role in controlling female secondary sexual characteristics during puberty; instead emphasize that oestrogen is crucial for both the development of secondary sexual characteristics and the regulation of the menstrual cycle, highlighting its dual role. For exam answers, make detailed notes on how oestrogen influences female secondary sexual characteristics and its role in the menstrual cycle.