Chapter 8 Respiratory Systems in Humans & Animals (# 1)

_________ ratio of total surface area to volume (TSA/V) for the efficient exchange of respiratory gases.

Adaptation of respiratory structure --> A _______ respiratory structure that is one cell thick, allows the diffusion of respiratory gases to occur.

The surface of the respiratory structure is always ______ for respiratory gases to dissolve in them.

The respiratory structure is complete with a network of ____________ (except for insects), that allows for the efficient delivery of respiratory gases.

The breathing system of insects is the _________________.

There are small pores in the thorax and abdomen of insects called _________.

The trachea branches out to form finer tubes called the _________.

Some insects have ___________ in their trachea system.

The respiratory structure of fish is the ______.

The filament has many thin and flat projections called ______ (singular).