Reproductive cycles
Other terminology that we need to make sure everyone's on the same page when we're talking about reproduction. Estrous cycle—similar in concept to the menstrual cycle of humans. Each species has its own estrous cycle. We'll discuss the estrous cycle of the dog during this lecture.
Next on the list is oocyte. An oocyte is a developing egg cell.
Follicles are fluid-filled blisterlike structures on the ovary. Within each follicle is an oocyte and its supportive cells. The follicles are also very important structures in hormone production.
And ovulation. This is what occurs when the follicles rupture, thus releasing their oocytes.