This slide shows a cross section of a female,  large intestinal roundworm (Ascaris lumbricoides).  The section shows the outer protective cuticle, which is secreted by the underlying hypodermis.  Longitudinal muscle bands, the intestine and body cavity (pseudocoelom) are clearly visible.  The slide also contain various sections through the long, coiled tubules that make up the reproductive system.  The system begins with the ovaries that lead to thicker oviducts that lead to the two large uteri containing the eggs.  These uteri eventually join to form the vagina (not shown on the slide), which exits at the genital pore.  Note: The ovaries and oviducts may differ in shape, depending on the way they were sectioned.