Ovulation in human female is induced by _______hormone:

Options

A. Estrogens
B. Prolactin
C. Progesterone
D. Luteinizing hormone

Answer

**Step-by-Step Solution:**

1. **Understanding Ovulation**: Ovulation is the process where an ovum (egg) is released from the ovary. In human females, this typically occurs around the 14th day of the menstrual cycle.

2. **Hormonal Regulation**: The menstrual cycle is regulated by various hormones, including estrogen, progesterone, prolactin, and luteinizing hormone (LH).

3. **Role of Estrogen**: Estrogen is primarily responsible for the growth and maturation of the ovarian follicles leading up to ovulation. It peaks before ovulation but does not directly induce the process.

4. **Role of Progesterone**: Progesterone is important for preparing the uterine lining for potential implantation after fertilization and also helps in maintaining pregnancy. However, it does not induce ovulation.

5. **Role of Prolactin**: Prolactin is involved in milk production after childbirth and is not related to the ovulation process.

6. **Luteinizing Hormone (LH)**: The key hormone that induces ovulation is luteinizing hormone (LH). It is secreted by the anterior pituitary gland and its levels surge around the middle of the menstrual cycle, specifically on the 14th day, which triggers the release of the ovum from the Graafian follicle.

7. **Conclusion**: Therefore, the hormone that induces ovulation in human females is luteinizing hormone (LH).

**Final Answer**: Ovulation in human female is induced by **luteinizing hormone (LH)**.

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