amnion - bag of fluid around the foetus, cervix - muscular opening to the uterus, contract - when muscles get shorter, embryo - ball of cells, fertilisation - when a sperm and egg fuse together, menstrual cycle - 28 day cycle that includes a period, placenta - where the foetus gets nutrients from the mother's blood, penis - male reproductive organ , oviduct - tube an egg travels along, puberty - when a child changes into an adult, umbilical - cord that connects to belly button, vagina - female reproductive organ, uterus - where the baby develops, foetus - the developing baby in the uterus, sperm - male sex cell, testes - organ that produces sperm, ovaries - organ that produces eggs,
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Reproduction Key Words
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