Corpus luteum is a mass of cells found in

The corpus luteum is a temporary mass of luteal cells formed from a ruptured ovarian follicle after ovulation; it occupies the ovary and arises at the site of the released egg . Its principal role is endocrine — secreting large amounts of progesterone to maintain the uterine lining in the luteal phase and support early pregnancy [1]. The descriptions of the female reproductive tract confirm the ovary as the organ that produces eggs and related structures where follicle rupture and subsequent luteinization occur, locating the corpus luteum specifically within the ovary rather than in organs such as the brain, pancreas, or spleen [2].

Sources

1. [1] https://ncert.nic.in/textbook/pdf/lebo102.pdf
2. [2] Science , class X (NCERT 2025 ed.) > Chapter 7: How do Organisms Reproduce? > 7.3.3 (b) Female Reproductive System > p. 124