The first event of puberty in girl is
A. Menarche
B. Thelarche
C. Pubarche
D. Pain abdomen
Correct Answer: B. Thelarche
Explanation
The first event of puberty in girls is Thelarche.
Thelarche
- It refers to the appearance of breast buds.
- Usually occurs around 8–13 years of age.
- It is the earliest physical sign indicating the onset of puberty in females.
Sequence of Puberty in Girls (Typical Order)
- Thelarche – Breast budding (first sign)
- Pubarche – Appearance of pubic and axillary hair
- Peak height spurt – Rapid increase in height
- Menarche – Onset of menstruation (usually 2–2.5 years after thelarche)
Final Answer
➡ The first event of puberty in girls is Thelarche (breast bud development).
Other Options Details
Here are the descriptions of all the given options:
A. Menarche
Menarche is the first menstrual period in a female.
It marks an important milestone in puberty and indicates that the reproductive system has matured enough to begin ovulation and menstruation. It usually occurs between the ages of 10–14 years.
B. Thelarche
Thelarche is the beginning of breast development in girls.
It is often the first visible sign of puberty and occurs due to increased estrogen production. Breast buds form beneath the nipple and gradually enlarge over time.
C. Pubarche
Pubarche refers to the appearance of pubic hair and axillary (underarm) hair.
It typically follows thelarche and is caused by increased secretion of adrenal and gonadal androgens.
D. Pain Abdomen
Pain abdomen means abdominal pain or stomach pain, which can occur for many reasons, including cramps during menstruation, digestive problems, or other medical conditions. During puberty, it may be associated with menstruation or ovulation cramps.
Summary
Option Meaning Menarche First menstrual period Thelarche Start of breast development Pubarche Development of pubic/axillary hair Pain abdomen Abdominal pain (can occur due to menstruation or other causes)