Page Content. Clinical research aims to advance medical knowledge by studying people, either through direct interaction or through the collection and analysis of blood, tissues, or other samples. A clinical trial is one type of clinical research that follows a pre-defined plan or protocol.
The female reproductive system interacts with many other systems in the body. The most common is the endocrine system. The reproductive system relies on the endocrine system to produce hormones such as progesterone and estrogen, that help with the blood lining of the uterus and prepare the uterus for pregnancy.
Female Reproductive System. Ovaries. 1  Are the primary female reproductive organs. 2  Produce female gametes (ova). 3  Secrete female sex hormones (estrogen and progesterone).4  Have ovarian follicles embedded in the ovary cortex are ovarian follicles; each follicle consists of an immature egg called an oocyte.emale Reproductive System. Ovaries. 1  Are the primary female reproductive organs. 2  Produce female gametes (ova). 3  Secrete female sex hormones (estrogen and progesterone).