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7b
Key Stage 3 Science
| Question | Answer |
|---|---|
| What are the sperm cell and the egg cell known as | Gametes |
| What is it called when a sperm and an egg fuse together | fertilisation |
| Do fish use internal or external fertilsation | External fertilisation |
| Reproduction that requires two parents | Sexual reproduction |
| What do the testes produce | Sperm |
| What is the ring of muscle at the lower end of the uterus called | Cervix |
| What does the egg travel down after it is released from the ovary | Fallopian tube |
| Where does a fertilised egg implant into | The lining of the uterus |
| What surrounds the egg to ensure only one sperm enters | A jelly coat |
| How is a sperm adapted to reach an egg cell | Stream lined shape, lots of mitochondria or a tail |
| Where does fertilisation usually occur | In the oviduct |
| What does the placenta provide to the baby | Oxygen, water and nutrients |
| The baby grows surrounded by what fluid | Amniotic fluid |
| How long does the gestation period last for in humans | approximately 9 months |
| When the embryo develops organs what is it then called | A foetus |
| Apart from nutrients what other important thing do babies receive through breast milk | Antibodies |
| Oestrogen and testosterone are examples of what | Sex hormones |
| What happens on day 14 of the menstrual cycle | The egg is released |
| What happens during menstruation (“having a period”) | The lining of the uterus breaks down |
| Contractions at the start of labour are caused by what | Muscles in the uterus contracting |
| Name the 3 key parts of the male reproductive system | Testis, sperm duct, penis |
| Name the 5 key parts of the female reproductive system | Ovary, fallopian tubes, cervix, uterus, vagina |
| Define "gamete" | Sex cells |
| Name the main female reproductive hormone | Oestrogen |
| Define "fertilisation" | Nucleus of male and female sex cell joining |
| Define "ovulation" | Releasing an egg |
| Define "menstruation" | Losing uterus lining |
| Name the process where a matured egg is released from the ovaries | Ovulation |
| Define "gestation period" | Time take for a baby to develop from fertilisation |
| Name the hormone that causes egg maturation in the ovaries | FSH (follicle stimulating hormone) |
| Define "placenta" | Organ providing foetus with oxygen and nutrients |
| Define "umbilical cord" | Tube connecting foetus to placenta |
| Approximately how long does human pregnancy last for? | 9 months |
| Name the hormone that stimulates ovulation | LH (luteinising hormone) |
| Name the hormone that stimulates the build-up of the uterus lining | Oestrogen |
| Name the hormone that maintains the uterus lining | Progesterone |
| State the average length of the menstrual cycle | 28 days |
| Which two female hormones does the pituitary gland secretes during the menstrual cycle? | FSH and LH |
| Which two female hormones does the ovaries release during the menstrual cycle? | Oestrogen and progesterone |
| Which hormone stimulates the release of oestrogen? | FSH |
Created by:
Davenant Foundation School
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