IGCSE Biology 4th edition

Biology books by
D G Mackean

Respiratory Flow in Fish

Next Drawing >
Respiratory Flow in Fish

Water is taken in through the mouth, passes over the gills and is expelled via the operculum. Movements of the mouth floor and operculum create the current and the 'valves' (skin flaps) maintain a one-way flow

© Copyright D G Mackean
< Back to Characteristics of Fish
Search this site
Search the web
 

© Copyright D G Mackean & Ian Mackean. All rights reserved.