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Year 7 KO A2b
Knowledge Organiser Key term Autumn 2 Reproduction
Term | Definition |
---|---|
The period of time when a child changes into an adult. It involves emotional and physical changes. | |
Amniotic fluid | Liquid that surrounds and protects the fetus (shock absorber). |
Cilia | Tiny hair on the surface of cells. |
Condoms | A barrier method of contraception that prevents semen being released into the vagina. |
Contraception | A method of preventing pregnancy. |
Contraceptive pill | A chemical method of contraception, which prevents ovulation. |
Egg cells | The female sex cell. |
Ejaculation | When semen is released from the penis. |
Embryo | A ball of cells that forms when the fertilised egg divides. |
Fertilisation | Joining of a nucleus from a male and female sex cell. |
Fetus | The developing baby during pregnancy (from 8 weeks after fertilisation). |
Gametes | (sex cells) The male gamete is a sperm and the female gamete is an egg. Join together to create a new organism. |
Gestation | Process where the baby develops during pregnancy. |
Menstrual cycle/ period | The monthly cycle during which the uterus lining thickens and breaks down. |
Menstruation | Loss of the lining of the uterus during the menstrual cycle. |
Ovulation | Release of an egg cell during the menstrual cycle. |
Placenta | The organ that allows transfer of nutrients and waste products between mother and fetus. It also acts as a barrier, stopping infections and harmful substances reaching the fetus. |
Puberty | The physical changes that take place during adolescence. |
Reproductive system | All the male and female organs involved in reproduction. The organ systems that produce sperm and egg, also where the fetus develops. |
Sex hormones | Hormones that are involved in the reproductive system (e.g. testosterone and oestrogen) |
Sexual intercourse | The process where the penis releases semen into the vagina. |
Sperm cells | Male sex cell containing male genetic material. |
Umbilical cord | Connects fetus to placenta. |