Question

Which of the following contraceptive devices makes the uterus unsuitable for implantation and the cervix hostile to the sperms?

• A. $\mathrm{NIM}-76$
• B. $\mathrm{LNG}-20$
• C. Lippes Loop
• D. Multiload$–375$

Answer 1

The correct option is B

$\mathrm{LNG}-20$

The correct option is B.

Explanation of correct option:

1. IUDs are metal or plastic devices that are placed into the uterus through the vagina by doctors.
2. One of the hormone-releasing IUDs is $\mathrm{LNG}-20$.
3. LNG 20 releases hormones that render the cervix unfavorable to sperm and the uterus unsuitable for implantation.

Explanation of incorrect options:

Option A:

1. The volatile portion of neem (Azadirachta indica) seed oil is known as NIM 76.
2. NIM-76 has spermicidal activity.

Option C:

1. Lippe's loop device was introduced in $1962$.
2. It was a plastic double “S” loop and it reduced the incidence of expulsion.
3. These are non-mediated and left in the uterine cavity for an indefinite amount of time.

Option D:

1. It is also an example of copper-releasing IUDs.
2. The $\mathrm{Cu}$ ions prevent fertilization by reducing sperm motility.

Final Answer: $\mathrm{LNG}-20$ contraceptive devices make the uterus unsuitable for implantation and the cervix hostile to the sperms.