List any three barrier methods of contraception and briefly describe how each method prevents fertilisation.

Step-by-step solution

1. Identify methods that act as physical barriers and do not involve hormones.
2. Condoms: a sheath covering penis; sperm cannot pass through the latex or polyurethane material.
3. Diaphragm: a flexible silicone dome placed over the cervix; it blocks the cervical canal and also creates an environment hostile to sperm when used with spermicidal jelly.
4. Cervical cap: a smaller dome fitted tightly over the cervix; it obstructs sperm from entering the uterine cavity.
5. State each method and its mechanism concisely.

Concept tested: Barrier contraceptive methods

Published 29 August 2026 · How this solution was prepared and checked

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