Other Free Encyclopedias » Science Encyclopedia » Science & Philosophy: Reason to Retrovirus » Respiratory System - Respiration In Insects, Respiratory System Of Fish, Respiration In Terrestrial Vertebrates, Human Respiratory System - Respiration in the earthworm

Respiratory System - Respiratory System Of Fish

gills water gill filaments

Gills mediate the gas exchange in fish. These organs, located on the sides of the head, are made up of gill filaments, feathery structures that provide a large surface for gas exchange. The filaments are arranged in rows in the gill arches, and each filament has lamellae, discs that contain capillaries. Blood enters and leaves the gills through these small blood vessels. Although gills are restricted to a small section of the body, the immense respiratory surface created by the gill filaments provides the whole animal with an efficient gas exchange. The surrounding water keeps the gills wet.

A flap, the operculum, covers and protects the gills of bony fish. Water containing dissolved oxygen enters the fish's mouth, and the animal moves its jaws and operculum in such a way as to pump the incoming water through the gills. As water passes over the gill filaments, blood inside the capillaries picks up the dissolved oxygen. Since the blood in the capillaries flows in a direction opposite to the flow of water around the gill filaments, there is a good opportunity for absorption. The circulatory system then transports the oxygen to all body tissues and picks up carbon dioxide, which is removed from the body through the gills. After the water flows through the gills, it exits the body behind the fish's operculum.


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about 2 years ago

thanks :) is there a diaggram of the fish respiratory system?

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10 months ago

how to use operculum movement to determine respiration rate in fresh water fingerlings in an aquarium tank.

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6 months ago

Thanks for the educatinal video!This video help me alot for my research.The video is great!The voice had spoken loud,clear and slowly,so we listener can listen more easily.Now i have lot of answers for the gill of fishes..............

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about 3 years ago

Thanks for all the info, its very useful and good :D

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over 3 years ago

thanks very much for having this web-site as it has helped be with my science assigment. It tells me all the information that i need



THANKS :)

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about 1 year ago

is there a respiratory system of a shell fish??

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about 3 years ago

do fish have a respiratory pigment like haemoglobin in humans?

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about 1 year ago

its hot

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3 months ago

Thank you! Really helpful!

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6 months ago

now i know,, yeah,,,,

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7 months ago

good

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7 months ago

oh yeah now i know!!!!!


_______________________________________________________????????????_____________??????

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7 months ago

ohz.....

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9 months ago

frank's this will help us with our project. :)

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9 months ago

frank's this will help us with our project. :)

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9 months ago

Thats good info :D

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10 months ago

how to use operculum movement to determine respiration rate in fresh water fingerlings in an aquarium tank.

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10 months ago

Your MoM!

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11 months ago

Omqq thiis wAs liikE tOtAllii hElpfUl sO liikE whEn ii tOtAllii gUtt A fiish ii knOw hOw!!!

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11 months ago

thanks

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about 1 year ago

it sucked !!!!!!!1

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10 months ago

hello

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over 3 years ago

can i see the picture of the respiratory system of a fish?

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about 1 year ago

IT WAS VERY USEFUL AND HAD A LOT OF INFORMATION IN IT .

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9 months ago

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11 months ago

ahhh

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19 days ago

gills