And this process by which we have the heap of cells, unorganized heap of cells eventually organize itself into these structures. This process is known as morphogenesis. Now, cell proliferation, cell growth and morphogenesis is not enough. And that's because if we examine, for example the female reproductive system we know that somehow this collection of cells that creates the Ovaries knows its function. What the Ovary does is it helps develop that primary follicle into a secondary follicle and the follicle eventually ruptures releasing that xcel, the secondary OASI into another structure known as the fallopian tube. And the fallopian tube somehow knows to carry this xcel along the canal where fertilization takes place in this section.