Homeostasis
 
Levels of regulation
 
Regulator
 
Conformer
 
homeotherm
 
poikilotherm
 
Bergman's rule
 
countercurrent heat exchange
 
color and behavioral T regulation mechanisms in tiger beetles
 
Osmoregulation
 
Considerations for disposal of nitrogenous wastes
 
Ammonia
 
Urea
 
Uric acid
 
Osmolarity
 
Osmoconformer
 
Osmoregulator
 
Osmoregulation by marine fish
 
Osmoregulation by freshwater fish
 
Functions of excretory systems
 
Steps in excretory regulation
 
Filtration
 
Reabsorption
 
Secretion
 
Protonephridia
 
Metanephridia
 
Malphigian tubule
 
Vertebrate kidney: structure
 
Vertebrate kidney: functions
 
Nephron
 
Glomerulus
 
Bowman's capsule
 
Ultrafiltrate
 
Function of proximal tubule
 
Function of descending limb
 
Function of ascending limb (thin segment)
 
Function of ascending limb (thick segment)
 
Function of distal tubule
 
Function of collecting duct
 
Countercurrent exchange in vertebrate kidney
 
Role of osmolarity of interstitial fluid