Oral contraceptives help in preventing preganancy by inhibiting

Options

A. Option1 Ova formation
B. Option2 Fertilization
C. Option3 Implantation
D. Option4 None of these

Answer

To solve the question "Oral contraceptives help in preventing pregnancy by inhibiting," we can break down the information provided in the video transcript into a step-by-step explanation.

### Step-by-Step Solution:

1. **Understanding Contraception**:
- Contraception refers to methods that prevent pregnancy by inhibiting the fertilization of an ovum by sperm and preventing subsequent implantation in the uterus.

**Hint**: Remember that contraception is about preventing conception.

2. **Role of Oral Contraceptives**:
- Oral contraceptives are medications taken to alter hormonal balance in the body. They primarily contain hormones like estrogen and progestin (or just progestin).

**Hint**: Think about how hormonal changes can affect reproductive processes.

3. **Mechanism of Action**:
- Oral contraceptives containing both estrogen and progestin inhibit the release of luteinizing hormone (LH) and follicular stimulating hormone (FSH) from the pituitary gland. These hormones are crucial for the development of eggs and preparation of the uterine lining for implantation.

**Hint**: Focus on the hormones involved in the menstrual cycle and their roles.

4. **Impact on Ovulation**:
- By inhibiting LH and FSH, oral contraceptives prevent ovulation, meaning that no egg is released from the ovaries.

**Hint**: Consider what happens during the menstrual cycle when ovulation is prevented.

5. **Progestin-Only Pills**:
- Pills that contain only progestin work by thickening the cervical mucus, making it difficult for sperm to reach the egg, thus preventing fertilization.

**Hint**: Think about how physical barriers can prevent sperm from reaching the egg.

6. **Conclusion**:
- Therefore, oral contraceptives help in preventing pregnancy by inhibiting the formation and release of ova (eggs) from the ovaries.

**Hint**: Summarize the overall effect of oral contraceptives on the reproductive system.

### Final Answer:
Oral contraceptives help in preventing pregnancy by inhibiting the formation and release of ova.