part of part of develops from develops from develops into develops into ovary corpus luteum mature ovarian follicle mesoderm-derived structure corpus hemorrhagicum 2025-05-27T08:38:48Z A transient, mesoderm-derived structure in the ovary that forms immediately after the rupture of a mature ovarian follicle during ovulation. It is formed by bleeding of small blood vessels in the follicle wall as the follicle collapses, resulting in a blood-filled center that rapidly clots. This structure develops into the corpus luteum. CH UBERON:8600129 Aleix Puig-Barbé