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Gills


Gills greatly increase the surface area for gas exchange. They occur in a variety of animal groups including arthropods (including some terrestrial crustaceans), annelids, fish, and amphibians.
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gills: structures that allow fish to exchange gases with their environment.
glial cells: the cells of the nervous system that support, protect, and nourish the neurons.
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The gills of marine fish have cells that can remove salt from the body by pumping it into the salt water.
The thyroid gland cells bring in iodine for use in producing hormones.
Cells in the vertebrate kidney reabsorb sodium ions from urine.
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mushroom gills
A tissue of radiating strips found on the lower surface of the mushroom cap.
Covered in Lab 6 Unicells and Filaments
mycelium
The densely branched network of hyphae in a fungus.
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gills
and the tissues.
All exchanges between blood and cells occur in the capillaries.
The force of the pump that pushes blood through the arteries is dissipated as the blood flows through capillaries.
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pertaining to gills
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
What Topic Is Your BIOLOGY Paper On?
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Assume that only 1,000 of these lakes and ponds contain bluegills. Assuming that each lake constitutes a population, an investigator would have to perform 499,500 separate crosses to determine whether the populations could interbreed.
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By drinking in sea water, and actively excreting salt out from the gills, the fish will gain salt as it produces an isotonic urine.
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gill arch A supporting structure of fish gills.
gill arches Bony or cartilaginous gill supports of some vertebrates; also called visceral arches.
gill cover (or operculum)The flap of bony plates that covers the gills of bony fishes.
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The opposite flow of adjacent fluids that maximizes transfer rates; for example, blood in the gills flows in the opposite direction in which water passes over the gills, maximizing oxygen uptake and carbon dioxide loss.
coupled reactions ...
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In fish, the system has only one circuit, with the blood being pumped through the capillaries of the gills and on to the capillaries of the body tissues. This is known as single circulation.
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green - looking pale and unhealthy; "you''re looking green"; "green around the gills"
5.
green - naive and easily deceived or tricked; "at that early age she had been gullible and in love" ...
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gill slit -- A slitlike or porelike opening connecting the pharynx of a chordate with the outside of the body. Gill slits may contain the gills and be used for gas exchange, as in most fish, but may also be used for filter-feeding, ...
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In lower vertebrates, blood vessels formed here become part of the gills; in higher vertebrates derivatives include portions of the jaw and middle ear. Also known as branchial arches, gill arches, or visceral arches.
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