UNIT 4 SEXUAL CHARACTERISTICS 4.2 Human Sexual Characteristics.

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UNIT 4 SEXUAL CHARACTERISTICS 4.2 Human Sexual Characteristics

1.- Human sexual characteristics. Primary sexual characteristics: Enable humans to reproduce: male and female. We have them even before we are born.

Secondary sexual characteristics: MEN Lower voices Developed muscles Body and facial hair Develop at puberty WOMEN Higher voices Breasts Wider hips

2.- Puberty. Pituitary gland sends hormones to genital organs. BOYS 13 and 14 years old PUBERTY Reproductive system matures Boys and girls develop secondary sexual characteristics GIRLS 11 and 14 years old

Comprehension: Answer the following questions with complete sentences. When do secondary sexual characteristics develope? What gland sends hormones to the genital organs? Do men or women have more facial and body hair? Which sexual characteristics do we have when we are born? In boys between 13 and 15, in girls between 11 and 14. Men have more facial and body hair. The pituitary gland sends the hormones. The primary sexual characteristics, that enables us to reproduce.