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.
User Comments
about 2 years ago
meg gibbons
thanks :) is there a diaggram of the fish respiratory system?
10 months ago
how to use operculum movement to determine respiration rate in fresh water fingerlings in an aquarium tank.
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..............
about 3 years ago
Thanks for all the info, its very useful and good :D
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 :)
about 1 year ago
jhonnel
is there a respiratory system of a shell fish??
about 3 years ago
do fish have a respiratory pigment like haemoglobin in humans?
about 1 year ago
its hot
3 months ago
kwills
Thank you! Really helpful!
6 months ago
now i know,, yeah,,,,
7 months ago
mohammad adnan
good
7 months ago
oh yeah now i know!!!!!
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7 months ago
april anne fama
ohz.....
9 months ago
Aliza and Latisha,
frank's this will help us with our project. :)
9 months ago
frank's this will help us with our project. :)
9 months ago
Gracie
Thats good info :D
10 months ago
how to use operculum movement to determine respiration rate in fresh water fingerlings in an aquarium tank.
10 months ago
Your MoM!
11 months ago
Morgie O'Pie
Omqq thiis wAs liikE tOtAllii hElpfUl sO liikE whEn ii tOtAllii gUtt A fiish ii knOw hOw!!!
11 months ago
sheik abul
thanks
about 1 year ago
it sucked !!!!!!!1
10 months ago
hello
over 3 years ago
can i see the picture of the respiratory system of a fish?
about 1 year ago
IT WAS VERY USEFUL AND HAD A LOT OF INFORMATION IN IT .
9 months ago
person
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11 months ago
ahhh
19 days ago
neelu
gills