Sex hormones
The testesThe plural form of testis, the male organ that produces sperm. produce testosteroneMale sex hormone produced in the testes, which is responsible for puberty in boys..
The ovariesA pair of organs in the female reproductive system where ova (eggs) and hormones are produced. produce oestrogenA female sex hormone produced in the ovaries, which is responsible for puberty in girls and the regulation of the menstrual cycle..
These hormones cause secondary sexual characteristics to develop at pubertyThe physical changes a child’s body goes through when developing into an adult..
| Male | Female | Both |
| Testes enlarge. | Sexual organs enlarge and breasts develop. | Body and pubic hair grows. |
| Body becomes more muscular. | Pelvis and hips widen. | Sexual awareness and sex drive increase. |
| Voice deepens. | Menstruation begins. |
| Male | Testes enlarge. |
|---|---|
| Female | Sexual organs enlarge and breasts develop. |
| Both | Body and pubic hair grows. |
| Male | Body becomes more muscular. |
|---|---|
| Female | Pelvis and hips widen. |
| Both | Sexual awareness and sex drive increase. |
| Male | Voice deepens. |
|---|---|
| Female | Menstruation begins. |
| Both |