Reproductive Health

Biology · Class 12

Simulation · Biology · Class 12

What an IUD does inside the uterus

"What an IUD does inside the uterus" is a free, interactive Class 12 Biology simulation for NEET, built on the NCERT section "Intra-uterine devices" in Reproductive Health. Inside the uterus with each IUD type: all raise sperm phagocytosis, copper also cuts motility, hormone IUDs also block implantation and make cervix hostile. NEET has asked about this idea 5 times in 10 years of papers.

From the lesson Intra-uterine devices in Reproductive Health. Change the values and watch what happens.

What an IUD does inside the uterusBiology · Class 12

What it shows

NCERT §3.2

Inside the uterus with each IUD type: all raise sperm phagocytosis, copper also cuts motility, hormone IUDs also block implantation and make cervix hostile.

Controls

3 to try

  • ToggleIUD — none / Lippes loop / CuT, Multiload 375 / Progestasert, LNG-20
  • Buttonrelease sperms
  • Readoutsperms phagocytosed, sperm motility, implantation possible

Try this

Pick the device that blocks implantation as well as hindering sperms.

Common mistake

Saying copper IUDs block implantation.

In NEET

10 years of papers

Asked 5 times in 10 years of NEET.

See the past questions: Contraceptive Methods, Reproductive Health (chapter)

The idea behind it

NCERT §3.2

  • IUDs are placed in the uterus through the vagina by doctors or expert nurses.
  • Three kinds: non-medicated (e.g. Lippes loop); copper-releasing (e.g. CuT, Cu7, Multiload 375); hormone-releasing (e.g. Progestasert, LNG-20).
  • All IUDs increase phagocytosis of sperms inside the uterus.
  • Copper IUDs also release Cu ions, which suppress sperm motility and the sperms' fertilising capacity.
  • Hormone-releasing IUDs do more: the uterus becomes unfit for implantation and the cervix becomes hostile to sperms.
  • IUDs suit females who want to delay pregnancy or space children, and they are one of the most widely accepted contraceptive methods in India.

Questions

4 answers

What does the "What an IUD does inside the uterus" simulation show?
Inside the uterus with each IUD type: all raise sperm phagocytosis, copper also cuts motility, hormone IUDs also block implantation and make cervix hostile.
What mistake does the "What an IUD does inside the uterus" simulation fix?
A common mistake it clears up: saying copper IUDs block implantation.
Has NEET asked about this idea?
Yes. NEET has asked about this idea 5 times in 10 years of papers.
Is this simulation free?
Yes. It is free and runs in the browser on a phone or a laptop. It belongs to the lesson "Intra-uterine devices" in Reproductive Health (Class 12 Biology).

Embed this simulation

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