What term is used for breast development in girls?

• A. Thelarche
• B. Menarche
• C. Adrenarche
• D. Ovulation

Answer: (A)

The term "thelarche" specifically refers to the onset of breast development in girls, marking an important milestone in female puberty. This developmental stage typically occurs between the ages of 8 and 13, indicating the beginning of physical changes associated with maturation and the preparation of the female body for potential reproductive functions.

Each of the other terms represents different physiological events: "menarche" is defined as the first occurrence of menstruation, signaling that the reproductive system is becoming fully functional. "Adrenarche" refers to the maturation of the adrenal glands and the subsequent increase in adrenal androgens that can influence changes in hair growth and other secondary sexual characteristics. "Ovulation" is the release of an egg from the ovary, which occurs later in the menstrual cycle, typically after menarche, and involves hormonal regulation. Thus, "thelarche" is distinct in its focus on breast development as a specific aspect of puberty in females.