Where are IUDs placed in the human female reproductive system for contraception?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → In the uterus
Option (1) In either of the ovaries — Incorrect. Nothing is placed in the ovaries; they make ova and hormones.
Option (2) In both the ovaries — Incorrect. For the same reason, the ovaries are not where an IUD goes.
Option (3) In the uterus — Correct. IUDs (intra uterine devices) are inserted by doctors or expert nurses into the uterus through the vagina.
Option (4) In the vagina — Incorrect. The vagina is where barriers such as diaphragms and vaults are placed, covering the cervix.
NCERT Extract:
Population Stabilisation and Birth Control – “… Another effective and popular method is the use of Intra Uterine Devices (IUDs). These devices are inserted by doctors or expert nurses in the uterus through vagina. These Intra Uterine Devices are presently available as the non-medicated IUDs (e.g., Lippes loop), copper releasing IUDs (CuT, Cu7, Multiload 375) and the hormone releasing IUDs (Progestasert, LNG-20) (Figure 3.2). IUDs increase phagocytosis of sperms within the uterus and the Cu ions released suppress sperm motility and the fertilising capacity of sperms. The hormone releasing IUDs, in addition, make the uterus unsuitable for implantation and the cervix hostile to the sperms.”