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
How Are You At The Factory" as though it was the second single. It reached #16 on Billboard's Album Rock Tracks chart. On his review of "Think Visual", David Wild of "Rolling Stone" wrote, "the melancholy "How Are You" is another of Ray's well-crafted songs of love and loss." The track also appeared on the compilation album, "Picture Book". Like many other Kinks singles of the 1980s, a promotional video for "How Are You" was filmed, featuring Ray Davies. Unusually, the video "How Are You" (as well as those for the two other singles from "Think Visual") was not directed by Julien Temple,