During the human menstrual cycle, a surge in luteinising hormone (LH) induces the rupture of the Graafian follicle, resulting in ovulation. Following this event, the remaining parts of the ruptured follicle transform into a specific structure. Identify this newly formed structure and the primary hormone it secretes to maintain the endometrium.

Step-by-step solution

After ovulation, the remaining parts of the ruptured Graafian follicle transform into a temporary endocrine structure called the corpus luteum. The corpus luteum secretes large amounts of progesterone, which is essential for the maintenance of the endometrium in preparation for a possible implantation and pregnancy. Corpus albicans is a degenerated, non-functional form of the corpus luteum. LH is secreted by the anterior pituitary to trigger ovulation, not by the corpus luteum. The Graafian follicle is the mature p