Question

Which contraceptive device attracts macrophages in the uterine cavity for phagocytosis of sperms?

• A. LNG - 20
• B. Multiload 375
• C. Lippes loop
• D. Vaults

Hint:

IUD types: Lippes = macrophages, Copper = spermicidal ions, LNG = hormonal effect.

Answer 1

The Correct Option is C

Concept:
Intrauterine devices (IUDs) are contraceptive methods that prevent fertilization through different mechanisms.

Step 1: Types of IUDs.
• Non-medicated IUDs → e.g., Lippes loop
• Copper-releasing IUDs → e.g., Multiload 375
• Hormone-releasing IUDs → e.g., LNG-20

Step 2: Mechanism of non-medicated IUDs. Non-medicated IUDs (like Lippes loop):
• Increase phagocytosis of sperms by macrophages in uterine cavity

Step 3: Analyze options.
• (A) LNG-20 → Hormone releasing $\times$
• (B) Multiload 375 → Copper IUD $\times$
• (C) Lippes loop → Non-medicated IUD, increases macrophage activity \checkmark
• (D) Vaults → Barrier method $\times$

Step 4: Conclusion. \[ \text{Lippes loop attracts macrophages for sperm phagocytosis} \]