Title: Kingdom Animalia
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Content: Phylum nematoda consists of only roundworms, some that are parasitic. Roundworms and their parasitic freinds are psuedococelomates,  which means they have a psuedocelum, a space between the internal digestive organs and the outer dermis of the worm. They  have a complete, one-way digestive tract. Major Classes: Hookworms: Burrow into your skin, travel through your bloodstream to your lungs, then are coughed back up and swallowed  into your digestive system. Pinworms: Live in your lower intestine and lay their eggs in your rectum. Trichinella: Flu like worm.