More cards in this set

the mouth

where two fluids flow in opposite directions

slender branches of tissue that make up the gill. they are are often called primary lamellae

sometimes called secondary lamellae. folds of the filament to increase surface area. they are also called gill plates

a bony flap that covers and protects the gills

an external opening or pore that allows air in or out of the tracheae

the fluid found at the end of the tracheoles in the tracheal system

a system of air filled tubes in insects