Oral contraception pills used by females help in birth control by

Options

A. inhibiting ovulation
B. forming barrier between spem and ovum
C. kills ova
D. kills sperms

Answer

**Step-by-Step Solution:**

1. **Understanding Oral Contraceptive Pills**: Oral contraceptive pills, commonly referred to as birth control pills, are medications taken by females to prevent pregnancy. They typically contain hormones such as estrogen and progesterone.

2. **Mechanism of Action**: The primary way these pills work is by mimicking the hormonal changes that occur during pregnancy. When a female takes these pills, the presence of progesterone maintains the endometrium (the lining of the uterus), which creates an environment similar to that of a pregnant female.

3. **Hormonal Regulation**: The intake of progesterone leads to a decrease in the secretion of Follicle-Stimulating Hormone (FSH) from the pituitary gland. Since FSH is essential for the maturation of ovarian follicles, its low levels prevent the development of eggs.

4. **Inhibition of Ovulation**: As FSH levels drop, Luteinizing Hormone (LH) levels also decrease. LH is crucial for triggering ovulation (the release of an egg from the ovary). Therefore, with lower LH levels, ovulation does not occur.

5. **Conclusion**: The primary mechanism by which oral contraceptive pills help in birth control is by inhibiting ovulation. This means that no egg is released for sperm to fertilize, effectively preventing pregnancy.

**Final Answer**: Oral contraceptive pills help in birth control by inhibiting ovulation.

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