Chapter 38 Flashcards
What type of animals have adaptations that reduce water uptake and conserve solutes?
Freshwater animals
What does osmoregulation do?
Controls solute concentrations and balances gain and loss of water
What does the word stenohaline mean?
Animals that can not tolerate substantial changes in external osmolarity.
Euryhaline animals can do what
Survive large fluctuations in external osmolarity.
Anhydrobiosis is what
The ability to lose almost all body water and survive in a dormant state.
An animals nitrogenous wastes reflect its ____
Phylogeny and habitat
The _________ and _______ of an animals waste products may greatly affect its water balance
Type and quantity
What type of animals excrete ammonia as nitrogenous waste
Aquatic animals.
What types of animals excrete urea as nitrogenous waste
Sharks, mammals, some bony fishes, turtles.
What types of animals excrete uric acid as nitrogenous waste.
Insects, birds, land snails, reptiles.
Name the four functions of the excretory system
Filtration, re absorption, secretion, excretion
Describe the flame bulb system
Network of closed tubules lacking internal openings, branches throughout the body.
Examples of animals that have protonephridia
Flatworms, Rotifers, some Annelids, lancelets and larvae of mollusks.
What is a Metanephridia system
Tubules that collect coelomic fluid and produce dilute Urine for excretion.
Annelids have What type of excretory system
Metanephridia
