The red blood cells bring oxygen to them and the lungs expel the carbon dioxide
It depends on your area, <em />I'd say a local docors office. For me, it is PatientFirst.
They produce oocytes (eggs) for fertilization and they produce the reproductive hormones, estrogen and progesterone. ... In the ovary, all eggs are initially enclosed in a single layer of cells known as a follicle, which supports the egg.