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
Monday at the Hug & Pint Monday at the Hug & Pint Monday at the Hug & Pint is the fifth studio album by Scottish indie rock band Arab Strap. It was released in Europe on 21 April 2003 by Chemikal Underground and in the United States a day later by Matador Records. The album features appearances from Conor Oberst and Mike Mogis of Bright Eyes and Barry Burns of Mogwai, among others. The title of the album refers to The Hug & Pint Bar and Club, formerly located in Falkirk, Scotland. An independent live music venue, "The Hug and Pint", on the Great Western Road