Zoology Exam 5 Study guide (1)
The continuous Balancing and rebalancing physiological process
What is the function of Homeostasis?
It maintains stability of internal environment.
Hemeostasis responds to what?
Metabolism requires what?
Supply of material
Homeostatis requires what?
Coordination of body systems.
the spontaneous movement of particles from an area of high concentration to an area of low concentration
The spontaneous net movement of solvent molecules through a semi-permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.
The Active process of Regulating water content
The tendency to take water by osmosis.
Measure of Osmotic pressure gradient across semipermeable membrane.
Having no Gradient and solutes equal on each side of membrane
Having a higher concentration of solutes outside the membrane
Having a lower concentration of solutes outside the membrane.
Marine organisms that maintain an internal environment that is isosmotic to their external environment.
Organisms that maintain equilibrium with seawater.
Tolerates wide range of Salinity.
Tolerates narrow salinity range
The Internal environment of a _______________ __________________ has more solutes relative to outside.
In a Hyperosmotic Regulator, water is gained by what?
In a Hyperosmotic Regulator, what happens during excretion?
Salt is lost
Describe the 4 Diffusion and Excretion processes in a hyperosmotic regulator
- Ions are actively transported across the gills
- Water Diffuses across the skin
- Kidneys reabsorb salts
- Dilute Urine is excreted
Which organisms have Hyperosmotic regulators?
- FW insects
Most invertebrate Marine Animals, including Hagfish are what?
Osmoregulation in Marine Animal results in the loss of what?
The internal environment of Marine Animals is what?
Describe the urine Production of Marine Animals.
They produce very little of it
Marine Animals Actively secrete what from their Gills and Kidneys?
Ions are actively secreted From what in Marine Animals?
Gills and Kidneys
Marine Animals drink what?
In Terrestial Animals, water is lost how?
via Respiration and Excretion
Terrestial Animals adapt to do what?
Obtain and Retain Water