Ovary gland

The ovary is an organ of the female reproductive system that produces eggs (ova) and the hormones estrogen and progesterone. It is located on either side of the uterus in the pelvic cavity, and is connected to the uterus via the fallopian tube. The ovary is composed of two parts, the cortex and the medulla, which contain the ovarian follicles that produce the eggs. The ovary also produces and contains the ova, which are released during ovulation. The ovary is responsible for the production of two primary hormones, estrogen and progesterone. Estrogen is the primary hormone responsible for the development of secondary sexual characteristics in females, such as breast development, body contouring, and body hair growth, as well as the regulation of the menstrual cycle. Progesterone is responsible for the preparation of the uterus for implantation of a fertilized egg, and the maintenance of pregnancy. The ovary undergoes cyclic changes throughout the menstrual cycle. During the early follicular phase, follicles in the ovary develop and the hormone estrogen is produced. This phase is followed by ovulation, during which a mature follicle ruptures and releases an egg into the Fallopian tube. The remaining follicle cells become the corpus luteum, which produces progesterone. This hormone helps prepare the endometrium for implantation of a fertilized egg and maintains the pregnancy if one is established. The corpus luteum eventually degenerates and the cycle begins again. The ovary is an essential organ of the female reproductive system and its functions are vital for fertility and the maintenance of pregnancy.