Oral Contraceptive Pills — NEET Biology
✅ Asked in NEET 2019Oral administration of small doses of either progestogens or progestogen–estrogen combinations is another contraceptive method used by the females. They are used in the form of tablets and hence are popularly called the pills. Pills have to be taken daily for a period of 21 days starting preferably within the first five days of menstrual cycle. After a gap of 7 days (during which menstruation occurs) it has to be repeated in the same pattern till the female desires to prevent conception. They inhibit ovulation and implantation as well as alter the quality of cervical mucus to prevent/retard entry of sperms. Pills are very effective with lesser side effects and are well accepted by the females. Saheli–the new oral contraceptive for the females contains a non-steroidal preparation. It is a 'once a week' pill with very few side effects and high contraceptive value.
NTA tests students' understanding of how hormonal contraceptives work—specifically that pills contain progestogens or progestogen-estrogen combinations that prevent conception through multiple mechanisms: inhibiting ovulation, preventing implantation, and altering cervical mucus. Students often mistake pills as working only by preventing ovulation, missing the cervical mucus component. The critical trap is confusing the 21-day active pill schedule with a continuous daily intake—students must remember the 7-day gap during menstruation before restarting. Additionally, Saheli (non-steroidal, once-weekly) differs from regular pills, so knowing this distinction helps answer comparative questions about side effects and contraceptive effectiveness.
Which of the following contraceptive methods involve the role of hormones? (NEET 2019)
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