Lutein cells are found in:
- Corpus luteum: The corpus luteum is a temporary endocrine structure that develops from the ruptured ovarian follicle after ovulation. It secretes hormones, including progesterone, and contains lutein cells. These cells are responsible for producing and releasing luteinizing hormone (LH) and estrogen.
- Primary follicle: The primary follicle is an early stage of follicular development in the ovary. It is characterized by the presence of an oocyte (immature egg cell) surrounded by a single layer of granulosa cells. Lutein cells are not typically found in the primary follicle.
- Corpus albicans: The corpus albicans is a degenerated form of the corpus luteum. It is formed when the corpus luteum regresses and undergoes fibrosis. Lutein cells are not present in the corpus albicans.
- All: The correct answer is C: Corpus luteum. Lutein cells are specifically found in the corpus luteum.
In summary, lutein cells are only found in the corpus luteum, which is a temporary endocrine structure formed from the ruptured ovarian follicle after ovulation. These cells play a crucial role in hormone secretion and are responsible for producing and releasing luteinizing hormone (LH) and estrogen. They are not found in the primary follicle or corpus albicans.