Endocrine System: The endocrine system is a network of glands throughout the body that produce hormones. It includes glands such as the pituitary gland (master gland), thyroid gland (regulates metabolism), adrenal glands (release stress hormone cortisol), etc.
Puberty: Puberty is a period during adolescence when hormonal changes lead to physical development such as secondary sexual characteristics (like breast development or facial hair) along with emotional changes.
Menopause: Menopause is a stage in a woman's life usually around age 45-55 when hormonal changes cause the ovaries to stop releasing eggs and menstruation ends.