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Chapter 44

BIOL 186 Chapter Notes - Chapter 44: Monocyte, Aorta, Superior Vena Cava


Department
Biology
Course Code
BIOL 186
Professor
Gregory Beaulieu
Chapter
44

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(-) Osmoconformers keep their
internal environment isotonic to the
environment
(-) Osmoconformers are mostly
marine because fresh water has a
very low solute concentration, and
any fish that made their environment
isotonic to that low solute
concentration would not have
enough, proteins, ions to conduct
biochemical living
Sharks are slightly hyperosmotic and therefore take in some water as
needed since the concentration gradient flows into the shark because
they have the higher concentration of the solute
Sharks also tolerate high urea concentrations that balance internal salt
concentrations to seawater osmolality
1.
Our Semipermeable membrane allows water to flow but salt to remain the same inside and
outside (isotonic)
2.
If you drink salt water the salt concentration outside of the cells will increase, which has an
increased affinity of water, resulting in water leaving the cells
3.
Over dehydration
4.
Excrete more water molecules than taken in because of the high ion ingestion
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