Gill

A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment. Branchia (: branchiae) is the zoologists' name for gills (from Ancient Greek ).

With the exception of some aquatic insects, the filaments and lamellae (folds) contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body. Carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill chambers in which they store water, enabling them to use the dissolved oxygen when they are on land. Provided by Wikipedia

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by Gill, Robin
Published 2017
Cambridge University Press

5
by Gill, Bernhard
Published 2018
Nomos Verlagsgesellschaft mbH & Co. KG
Other Authors: ...Gill, Bernhard...

8
by Garrett, Gill
Published 1990
Macmillan Education UK

9
by Gill, Thomas
Published 1848
E. Wilson

10
by Gill, Bernhard
Published 2003
VS Verlag für Sozialwissenschaften

13
by Gill, Thomas
Published 1827
Thomas Hurst, Edward Chance and Co

15
by Gill, Conrad
Published 1913
University Press

16
by Wakley, Gill
Published 1991
Springer US

17
by Gill, G.
Published 1974
Springer Netherlands

18
by Gill, Thomas
Published 1822
T. Cadell

19
by Hasson, Gill
Published 2015
Pearson Education

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by Hasson, Gill
Published 2012
Pearson Education Limited