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 de bière". In Flanders, the word "pintje", meaning 'little pint', refers only to a 250 ml glass of lager. Some West- and East-Flemish dialects use it as a word for beaker. The equivalent word in German, "Pintchen", refers to a glass of a third of a litre in Cologne and the Rhineland. In South Australia, ordering "a pint of beer" results in 425 ml (15 fl oz) being served. Customers must specifically request "an Imperial pint of beer" to get 570 ml (20 fl oz). Australians from other states often contest the size of their beers in Adelaide. One US