Lab 6 Flashcards
Identify 3 animals that belong to 3 different phyla
Sponges Jellyfish Flatworms Roundworms mammals
different ways animals exchange gas:
body surface, tracheal systems, lungs, and gills
why animals that use their body surface (including frogs) die if their body surface dries out.
If they get too dry, they cannot breathe and will die
Their skin has to stay wet in order for them to absorb oxygen so they secrete mucous to keep their skin moist
Explain the advantage of a double circuit/loop over a single circuit/loop.
The advantage of a double circulatory system is that blood can be pumped to the rest of the body at a higher pressure.
4 valves ?
Right atrioventricular valve
Left atrioventricular valve
Aortic semilunar valve
Pulmonary semilunar valve
how is the amniotic egg similar to a seed?
Like a seed, the amniotic egg has an embryo, food source, a protective shell and a need for gas exchange.
