NEET BIOLOGY

Detailed explanation-1: -Birth control pills (BCPs) contain man-made forms of 2 hormones called estrogen and progestin. These hormones are made naturally in a woman’s ovaries. BCPs can contain both of these hormones, or have progestin only.

Detailed explanation-2: -The combined oral contraceptive pill is often just called “the pill". It contains artificial versions of female hormones oestrogen and progesterone, which are produced naturally in the ovaries. If sperm reaches an egg (ovum), pregnancy can happen.

Detailed explanation-3: -Most birth control pills are “combination pills” containing a mix of the hormones estrogen and progesterone to prevent ovulation (the release of an egg during the monthly menstrual cycle).

Detailed explanation-4: -The traditional progestogen-only pill (POP) prevents pregnancy by thickening the mucus in the cervix to stop sperm reaching an egg. The desogestrel progestogen-only pill can also stop ovulation. The progestogen-only pill needs to be taken every day to work.