There are a variety of parasitic worms that can take up residence in humans. Among them are flatworms, roundworms, and thorny-headed worms (spiny-headed worms). The risk of parasitic worm ...

There are at least 20,000 different species, but the main three types include flatworms, roundworms and segmented worms, according to Britannica. The earthworm, the worms you commonly see after it ...