Exam 3 Flashcards
What vertebrates have a double circulation pattern?
mammals and birds
What type of circulatory pattern do fish have?
Single circulation
What is osmoregulation?
keeping waste water and ions at tolerable levels inside the body
What is homeostasis?
The ability to maintain a constant body temperature
What compounds must all animals regulate?
h20 ions and wastes
Where does deamination occur in different animals?
invertebrates- digestive gland
vertebrates - liver
What are the three nitrogenous waste products produced by different animals?
urea, uric acid and ammonia
Why do those animals use the particular nitrogenous waste products that they do?
because of the environment that they are in
What is a cleidoic egg?
egg with a hard shell
What are the three mechanisms used by all excretory structures to retain needed compounds and excrete unneeded ones?
- filtration/osmotic pressure-forces body fluids into es via force or osmotic pressure (pulls fluids into es with high solute concentration.
- reabsorption/ secretion- active transport of needed components back into body from es
- Excretion- removal of unwanted compounds from body.
What is filtrate?
solutes
