Page 76 - Science Course 2 (Book 1)

Mo3-L2a: What is Puberty?

Physical Changes Estrogen is a female sex hormone which
stimulates female puberty and controls a
• Growth spurts(getting taller) woman's reproductive cycle.
• Hair grows on legs, under arm and around the genitals
• Hair and skin may get oilier(may get spots/acne)
• Sweat glans develop and sweat starts to smell
• May feel hungrier.

Progestogen is a female sex hormone secreted
by the ovary as part of the menstrual cycle.

Male Bodies Female Bodies
• Voice deepens • Get periods
(start menstruation)
• Get facial hair
• Produce a whitish
• Shoulder widen vaginal discharge
during the menstrual Testosterone is a male sex hormone that
• Get erections for no cycle affects a man’s appearance and sexual
obvious reason development.
• Begin to ovulate(eggs
• Start making sperm released from ovaries)

• Have wet dreams • Hips widen
(ejaculate during sleep)
• Breast Develop
Sex Hormones

Puberty starts when extra amounts of chemicals called hormones start to be produced in the body.

The body produces the sex hormones which are responsible for many different changes in the body.

The brain and pituitary gland release the sex hormones that regulate the reproductive organs.

Pituitary gland

Facial hair
Underarm hair
Voice change
Breast Growth
Underarm hair
Hip Growth
Pubic hair
Pubic Hair
Ejaculation
Testicles Menstruation
Ovaries

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