Name two hormonal contraceptive methods other than oral contraceptive pills and briefly describe how each method prevents ovulation.
Answer
The two methods are (i) Injectable contraceptives (e.g., depot medroxyprogesterone acetate) – they release progestin which suppresses the LH surge and thus prevents ovulation; (ii) Implantable contraceptives (e.g., levonorgestrel implant) – they continuously release progestin, inhibiting follicular development and preventing the LH surge, thereby averting ovulation.
Step-by-step solution
- Identify hormonal contraceptive methods besides OCPs.
- Select injectable contraceptives and implantable contraceptives as the two methods.
- Explain that injectable contraceptives release progestin which suppresses the luteinising hormone surge, preventing ovulation.
- Explain that implantable contraceptives continuously release progestin, inhibiting follicular maturation and the LH surge, thereby preventing ovulation.
Common mistake: Confusing the role of estrogen with progestin in preventing ovulation.
Concept tested: Hormonal contraception mechanisms
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