Conservation status

Xyloplax medusiformis is known only from nine specimens taken off the coast of New Zealand. It is therefore thought to be endemic to that region. Xyloplax turnerae is known from several hundred specimens collected off the Bahamas; it may

Medusiform sea daisy (Xyloplax medusiformis), ventral side. (Photo by Alan N. Baker. Reproduced by permission.)

well be endemic to the tropical west Atlantic Ocean. Neither species is known to be threatened.

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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