Preventing Dehydration in Children presents topics also discussed in Chapter 4 of your text that detail the need for oral electrolyte and fluid replacement (oral rehydration therapy) in infants and children suffering from diarrhea. This is especially important because of the number of young lives lost to dehydration from vomiting and diarrhea annually.

http://www.fda.gov/fdac/features/696_kids.html

To review or learn more about membrane structure and function, choose from a variety of topics, including Membrane Function, Membrane Lipids, Membrane Proteins, and others, within The Structure and Function of the Plasma Membrane. This page is from lecture notes for a biology course at the University of Nebraska -Lincoln.

http://www-class.unl.edu/bios201/chapter4WEB/