Proliferation of endometrium of uterus in controlled by

Options

A. Relaxin
B. Oxytocin
C. Progesterone
D. Oestrogen

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which hormone is responsible for the proliferation (growth) of the endometrium in the uterus.

2. **Identifying Relevant Hormones**: The hormones mentioned are relaxin, oxytocin, progesterone, and estrogen. We need to determine which of these is primarily responsible for endometrial proliferation.

3. **Role of Estrogen**: During the follicular phase of the menstrual cycle, growing follicles in the ovaries release estrogen. This hormone plays a crucial role in stimulating the growth of the endometrial lining.

4. **Role of Progesterone**: After ovulation, the ruptured follicle transforms into the corpus luteum, which secretes progesterone. While progesterone is essential for maintaining the endometrium, it does not stimulate its proliferation; rather, it prepares the endometrium for potential implantation of an embryo.

5. **Role of Relaxin and Oxytocin**: Relaxin is primarily involved in pregnancy and helps to relax the uterus and pelvic ligaments. Oxytocin is involved in childbirth and lactation but does not play a role in the proliferation of the endometrium.

6. **Conclusion**: Based on the roles of these hormones, the hormone responsible for the proliferation of the endometrium is estrogen.

**Final Answer**: The proliferation of the endometrium of the uterus is controlled by **estrogen**.

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