<span>A woman's ovary is sixteen times the size of a single sperm. This allows said sperm, or any of its friends, to penetrate the ovary with ease and precision. The ovary will also serve as the home for this sperm during its growth, proving that its larger size has multiple purposes in assisting in sperm growth.</span>
I think its because when your upside down, your not breathing right. So its a way of trying to breathe correctly.
epithelial stomach cell>stomach lining tissue>stomach>disgestive system
