Reproduction, fertility and contraception (CCEA)Sex hormones
Most animals carry out sexual reproduction. Sexual reproduction involves the joining of two sex cells (gametes) – the sperm (male gamete) and the egg/ovum (female gamete).
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..
