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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. |