OCR GCSE Biology 2025 – 400 Free Practice Questions to Pass the Exam

The primary function of the contraceptive patch is to prevent ovulation by inhibiting the production of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The patch releases hormones, specifically estrogen and progestin, into the bloodstream. These hormones work to suppress the natural hormonal signals that stimulate the ovaries to release an egg. As a result, ovulation does not occur, which means there is no egg available for sperm to fertilize.

This method of hormonal contraception is effective in reducing the likelihood of pregnancy, and its transdermal application (the patch being placed on the skin) allows for a steady release of hormones over a week, making it a convenient option for many individuals seeking to manage their reproductive health.