What hormone influences the development of female accessory sex organs and secondary sex characteristics?

Estrogen is the primary hormone responsible for the development of female accessory sex organs and secondary sex characteristics. This hormone plays a critical role in the female reproductive system, aiding in the development of structures such as the uterus, ovaries, and fallopian tubes. Additionally, estrogen contributes to the physical changes associated with puberty in females, such as the development of breasts and the widening of hips.

While other hormones are involved in the broader spectrum of sexual and reproductive health, estrogen specifically is crucial for female sexual maturation and the maintenance of the female reproductive system's health. For example, progesterone is primarily involved in preparing the uterus for pregnancy and regulating the menstrual cycle, but it does not influence the development of accessory sex organs like estrogen does. Testosterone, while important for male characteristics, doesn't function as a primary hormone in females except in smaller amounts. Luteinizing hormone plays a role in regulating the menstrual cycle and ovulation but is not directly responsible for the development of sex characteristics or organs.