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B.1.2.2 Control in the Human Body (Part 2)

Article ID: 370
Last updated: 02 Oct, 2015

e) The uses of hormones in controlling fertility include:

■ giving oral contraceptives that contain hormones to inhibit FSH production so that no eggs mature – oral contraceptives may contain oestrogen and progesterone to inhibit egg maturation – the first birth-control pills contained large amounts of oestrogen. These resulted in women suffering significant side effects – birth-control pills now contain a much lower dose of oestrogen, or are progesterone only – progesterone-only pills lead to fewer side effects

Video: https://youtu.be/i_aMbqdHzfQ?list=PLC0CC234D0C5278A9

■ giving FSH and LH in a ‘fertility drug’ to a woman whose own level of FSH is too low to stimulate eggs to mature, for example in In Vitro Fertilisation (IVF) treatment – IVF involves giving a mother FSH and LH to stimulate the maturation of several eggs. The eggs are collected from the mother and fertilised by sperm from the father. The fertilised eggs develop into embryos. At the stage when they are tiny balls of cells, one or two embryos are inserted into the mother’s uterus (womb)

Video :  How IVF Works

Article ID: 370
Last updated: 02 Oct, 2015
Revision: 4
Views: 38
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B1.2.2 Control in the Human Body (Part 1 ) : Notes and Active...       B1.2.3 Control in Plants : Notes and Active Links