Secondary oocyte is ovulated from:

Explanation

The secondary oocyte is ovulated from a structure known as the Graafian follicle, also referred to as the mature or tertiary follicle. The process starts with the development of a primordial follicle, which goes through several stages of development, including the primary follicle, secondary follicle, and then the mature Graafian follicle. The Graafian follicle is the final stage of follicular development before ovulation. Upon maturation, the Graafian follicle releases the secondary oocyte during ovulation. This event marks the rupture of the follicle, and the secondary oocyte is released into the fallopian tube. From there, it can be fertilized by sperm if present, leading to the formation of a zygote and, ultimately, pregnancy. If fertilization does not occur, the remaining components of the Graafian follicle undergo degeneration.