Short answer: List three barrier methods of contraception and briefly explain how each method prevents fertilisation.
Answer
Male condom – blocks sperm; Diaphragm – covers cervix; Cervical cap – blocks sperm
The correct answer is Male condom – blocks sperm; Diaphragm – covers cervix; Cervical cap – blocks sperm — Thus the three barrier methods and their mechanisms are listed.
Step-by-step solution
- Identify barrier methods: Male condom, Diaphragm, Cervical cap.
- Explain male condom: A sheath covers the penis, physically preventing sperm from entering the vagina.
- Explain diaphragm: A dome‑shaped silicone or latex device is inserted over the cervix and often used with spermicidal gel to block sperm entry.
- Explain cervical cap: A small cup fitted over the cervix, blocking sperm from reaching the uterine cavity.
- Thus the three barrier methods and their mechanisms are listed.
Common mistake: Forgetting to mention spermicidal gel with diaphragm
Concept tested: Barrier contraceptive methods
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