Inside a Go Fish!.

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Presentation transcript:

inside a Go Fish!

Gills Covered by gill slits or operculum Used for O2 and CO2 exchange Swimming & opening mouth bring in water Mouth – gills - out

Structure keep food out increase the surface area capillaries cartiledge support fleshy projections

Function H2O O2 CO2 Diffusion Capillary in lamallae from body to heart

Function Diffusion Capillary in lamallae from body to heart

Function Diffusion Capillary in lamallae from body to heart

Function Diffusion Capillary in lamallae from body to heart

Fig. 8.15

Getting oxygen from water is hard work. Solution…

Countercurrent System of Flow Result: No matter where the blood meets the water, the O2 of the water is always higher = more efficient. Low O2 Water Flow High O2 Blood Flow Low O2 High O2

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