Primary and secondary characteristics of Puberty HEALTH Recap

Primary and secondary characteristics of Puberty HEALTH

Recap on hormones Oestrogen • Female Hormone • Produced in the ovaries Helps bring about the physical changes that turn a girl into a woman. This occurs during puberty. Some changes that occur: - Growth of the breasts - Growth of pubic and underarm hair - Start of menstrual cycle

Testosterone • Male Hormone - Brings out male physical changes that turn a boy into a man. Testosterone is created in the Testes. • Some changes that occur: - Growth of the penis and testes - Growth of facial, pubic and body hair - Deepening of the voice - Building of muscles and strong bones

• https: //www. youtube. com/watch? v=Rsj 6 d. W 6 q. KRc

PRIMARY AND SECONDARY SEX CHARACTERISTICS

Primary characteristics of puberty • Primary sex characteristics refer to changes to the sexual organs themselves (uterus, vagina, penis, and testes) • It involves both males and females.

Primary sex characteristics for males (boys) • Primary sex characteristic changes for boys include the enlargement of the testes, penis, prostate gland, and seminal vesicles. • These changes normally begin to occur between the ages of 9 and 14 years. • Their growth is generally completed between ages 12 and 16 years.

Primary sex characteristics for females (girls) • Some changes that occur to females include: - The budding stage of development (breast elevation) and the rounding of the hip begins - The uterus, vagina, labia and clitoris increase in size - Pubic hair growth becomes rapid and is slightly pigmented - Menarche occurs (first occurrence of menstruation)

Secondary characteristics • Secondary sexual characteristics are those that emerge during the prepubescent through post pubescent phases • They are visible changes such as: - Growth of hair - Change in body shapes for both males and females

Secondary sex characteristics in males • • • Growth of testicles Growth of pubic hair Chest becomes larger Growth of armpit hair Muscle growth Voice becomes deeper

Secondary characteristics in females • • • Enlargement of breasts Enlargement of uterus and vagina Narrowing of shoulders Widening of hips (for child bearing) High pitched voice Growth of pubic hair

Why do these changes occur? • So that the human body is capable of reproduction • If puberty did not occur we would not be able to have babies, which in turn means no human race!

Questions • What is the male hormone called? -Testosterone • What is the female hormone called? • -Oestrogen • When do the primary changes usually occur? - 9 to 14 years old • What are two features of secondary sex characteristics in males? Two for females? - Body hair & change in body shapes • Why do these changes occur? - Preparing the body for reproduction