External gills usually contains muscle tissue, and may be moved by the animal as a free appendage, in order to stir up stagnant water. The stalk is lined by many thinly walled filaments (fimbriae), containing the majority of blood vessels used in gas exchange. Animals usually have one external gill originating on each gill arch (except the hyoid), which leads to there being three pairs of external gills in salamanders, and four in the gilled larvae of lungfish. External gills External gills are the gills of an animal, most typically an amphibian, that are exposed to the environment, rather than set inside
Pint glass which are either screen-printed or engraved on the side of the glass. Brewery enthusiasts may travel thousands of miles to see where their favorite beer is made or to sample new local and fresh beers, and collectors often display their collections (which sometimes total in the hundreds) in display cases or on shelves. Beer festivals frequently have commemorative pint glasses made specially for the event. As with other glass objects such as glass bottles, pint glasses can be used as a weapon, either smashing an intact glass in a victim's face or smashing the glass and then slashing with the