1. The theca layer of ovarian follicles is organised into an inner theca interna and an outer theca externa. 2. The primary oocyte within the tertiary follicle grows in size and completes its first meiotic division. 3. First meiotic division is an unequal division resulting in the formation of a large haploid tertiary oocyte and a tiny first polar body Regarding 1,2 and 3 :