Chapter 27 Outline
The Importance of Animal Body Fluids
The Relationships among Body Fluids
Types of Regulation and Conformity
Natural Aquatic Environments
Natural Terrestrial Environments
Organs of Blood Regulation
- The osmotic U/P ratio is an index of the action of the kidneys in osmotic regulation
- The effects of kidney function on volume regulation depend on the amount of urine produced
- The effects of kidney function on ionic regulation depend on ionic U/P ratios
Food and Drinking Water
- Salty drinking water may not provide H2O
- Plants and algae with salty tissue fluids pose challenges for herbivores
- Air-dried foods contain water
- Protein-rich foods can be dehydrating for terrestrial animals
Metabolic Water
- Metabolic water matters most in animals that conserve water effectively
- BOX 27.1 Net Metabolic Water Gain in Kangaroo Rats