Hair worms

Phylum Nematomorpha Number of families 2

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Parasitic worms as juveniles in marine or terrestrial arthropods, free-living as adults

Photo: Paragordius varius worms emerging from Gryllus firmus cricket. The worms are undergoing the transition from a parasitic life cycle within the host, to a free-living one. (Photo by Ben Hanelt. Reproduced by permission.)

Phylum Nematomorpha Number of families 2

Thumbnail description

Parasitic worms as juveniles in marine or terrestrial arthropods, free-living as adults

Photo: Paragordius varius worms emerging from Gryllus firmus cricket. The worms are undergoing the transition from a parasitic life cycle within the host, to a free-living one. (Photo by Ben Hanelt. Reproduced by permission.)

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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