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IGCSE biology- quynh
IGCSE- Human Reproduction topic 15.5-15.9
| Question | Answer |
|---|---|
| If a man's infertile (sperm is in too little in quantity or too weak to swim to uterus), what method can he take in order to have a baby? | artificial insemination (AI) |
| Ante natal care involves the mother having great quantities of which nutrients? | calcium, iron, carbohydrate, protein |
| Why shouldn't the mother smoke during pregnancy? | nicotine and carbon monoxide cross the placenta and can result in premature or underweight babies |
| During labour, which part of the female reproductive system contract? | the muscles in the uterus wall |
| When the placenta comes away from the uterus wall and is pushed out of the vagina, it is called the? | afterbirth |
| What happens to the amnion and amniotic fluid during labour? | The amnion breaks allowing amniotic fluid to escape |
| Why is breast milk better than formula milk? | It contains antibodies which gives the baby passive immunity to the diseases that the mother has had recently |
| Which hormone stimulates the development of a follicle inside the ovary abd the secretion of oestrogen? | FSH |
| Which hormone travels to the ovary in the blood, stimulating ovulation and formation of yellow body? | Luteinising hormone (LH) |
| The remaining follicle cells left behind in the ovary after ovulation forms a... | yellow body |
| The function of progesterone? | thickening and maintaining the lining of the uterus wall, and prevent it breaking down |
| Which gland produces hormones that stimulate the sex organ during puberty? | Pituitary gland |
| A small plastic device that contains hormones and is fitted inside the woman's uterus to prevent sperm passing through it | IUD (Intra-Uterine Device) |
| How does the 'pill' works? | It contains oestrogen and progesterone which prevents the ovary releasing egg by inhibiting the production of FSH by pituitary |
| When the woman stops producing egg (stops menstruating), she is in her... | menopause |
| What is vasectomy? | an operation which the man's sperm tubes are cut and tied so he won't be able to produce any sperm during ejaculation |
| Methods of birth control prevent pregnancy by: | stop the sperm from reaching the egg, stops the egg from being made, or stop the fertilised egg from implanting and developing in the uterus |
| HIV stands for? | Human immunodeficiency virus |
| What does the HIV virus do? Why is HIV virus so dangerous? | It destroys lymphocytes leading to a weakening of the immune system. This makes people unable to fight of minor infections and diseases- leading to death |
| A sexually transmitted disease caused by a small, spherical bacterium living inside the moist lining of the male or female reproductive tracts | Gonorrhoea |
Created by:
quynhluong
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