The process in which the egg matures, is released and the uterus receives it?

The process you're referring to is called the menstrual cycle, which occurs in females of reproductive age. Here are the steps:

1. Follicular Phase: This is the first part of the menstrual cycle. It starts on the first day of your period. During this phase, your brain's hypothalamus sends a signal to your pituitary gland to release follicle-stimulating hormone (FSH). This hormone stimulates your ovaries to produce around 5 to 20 small sacs called follicles. Each follicle contains an immature egg.

2. Ovulation: Around the middle of your menstrual cycle, the level of another hormone, luteinizing hormone (LH), surges, triggering the most mature follicle in one of your ovaries to burst and release an egg. This process is known as ovulation.

3. Luteal Phase: After the egg is released, the ruptured follicle closes after releasing the egg and forms a structure called a corpus luteum, which produces progesterone.

4. If the egg is not fertilized by a sperm, the corpus luteum shrinks and stops producing progesterone. This drop in progesterone levels causes the lining of the uterus to shed, which is known as menstruation.

5. If the egg is fertilized, it travels down the fallopian tube and implants in the uterus. The corpus luteum continues to produce progesterone to maintain the lining of the uterus during early pregnancy.