Graffian follicle are found in Ovary of mammals
The Graffian follicle, also known as the mature follicle, is a structure found in the ovary of mammals. It is a crucial part of the female reproductive system and plays a vital role in the process of ovulation. Here are the key points explaining why Graffian follicles are found in the ovary of mammals:
1. Structure: The Graffian follicle is a fluid-filled sac that contains an immature egg, also known as an oocyte. It is surrounded by granulosa cells that provide nourishment and support to the developing egg.
2. Development: Graffian follicles develop from primordial follicles, which are present in the ovary from birth. During each menstrual cycle, several follicles start to grow, but only one becomes dominant and reaches the mature Graffian follicle stage.
3. Hormonal regulation: The development and maturation of Graffian follicles are regulated by hormones such as follicle-stimulating hormone (FSH) and luteinizing hormone (LH) secreted by the pituitary gland. FSH stimulates the growth of follicles, while LH triggers ovulation.
4. Ovulation: When the Graffian follicle reaches its maximum size, it ruptures, releasing the mature egg into the fallopian tube. This process is called ovulation and marks the fertile period for a woman.
5. Fertilization: If the released egg encounters sperm in the fallopian tube and fertilization occurs, it implants itself in the uterus and develops into a pregnancy. If fertilization does not occur, the menstrual cycle continues, and a new Graffian follicle starts to develop.
In conclusion, Graffian follicles are found in the ovary of mammals, including humans. They are responsible for the production and release of mature eggs during the menstrual cycle, contributing to the reproductive process.