Three Pore Theory

Three-pore theory explains water and solute transport across the peritoneal microvessel during peritoneal dialysis. For this transport process, there are three kinds of pores: a large number of small pores (radius 40 to 50 Â) for low molecular weight, a very low number of large pores (radius 250 Â) for macromolecules, and ultrasmall pores (radius 3 to 5Â) for water transport but rejecting the transfer of solutes. Aquaporins, especially aquaporin-1, which was identified recently, are the proteins constituting these transendothelial water channels; they are assumed to be ultrasmall pores.

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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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