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27.6 MB (1.9 MB compressed)
3989 x 2421 pixels
33.8 x 20.6 cm ⏐ 13.3 x 8.1 in (300dpi)
JOHN BAVOSI / SCIENCE PHOTO LIBRARY JOHN BAVOSI / SCIENCE PHOTO LIBRARY
Female contraceptives. Illustration showing three methods of female contraception: diaphragm, coil, and pill. At lower left is a side view of the female vagina with a diaphragm (white) fitted over the cervix. A diaphragm is a dome of rubber which prevents sperm entering the uterus (womb). It is used with a spermicide. At centre, a section through the uterus shows a coil or intrauterine device fitted inside the womb. A coil acts to prevent implantation of an embryo in the womb. At right, a view of the brain shows pituitary gland (red) & hypothalamus (purple). Hormones delivered by the contraceptive pill act on the pituitary gland to prevent pregnancy.
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