Blue crabs dramatize the dynamism of animal water and salt relations

Figure 25.1 Body fluids account for 60% of the body weight of young adult people

Figure 25.2 The three major types of body fluids are closely juxtaposed

Figure 25.3 Osmotic regulation and conformity (Part 1)

Figure 25.3 Osmotic regulation and conformity (Part 2)

Figure 25.5 The responses of a resident osmotic regulator to variations in salinity in an estuary

Figure 25.7 The interpretive significance of the osmotic U/P ratio (Part 1)

Figure 25.7 The interpretive significance of the osmotic U/P ratio (Part 2)

Figure 25.8 The fundamental principles of cell-volume regulation

Figure 25.9 Many cells alter their content of organic molecules to achieve cell-volume regulation

Figure 25.10 Animals tend to be similar in their intracellular concentrations of inorganic ions (Part 1)

Figure 25.10 Animals tend to be similar in their intracellular concentrations of inorganic ions (Part 2)

Posterior end of larval Culex pipiens reared in different media

Exchange of water and salt in some vertebrates

Figure 26.7 Water–salt relations in freshwater and marine teleost fish (Part 1)

Figure 26.7 Water–salt relations in freshwater and marine teleost fish (Part 2)

Figure 26.9 Water–salt relations in a marine shark

Solutions to water balance in aquatic vertebrtates

Figure 26.2 Ion exchanges mediated by active Na+ and Cl– transport in freshwater teleost fish

Figure 26.8 The salt glands of a herring gull

Excretory system of an earthworm, a planaria, and an insect

Figure 26.15 Within a group, total rate of evaporative water loss is an allometric function of size

The contractile vacuole of Amoeba proteus