During inspiration, what happens to the pressure in the thoracic cavity?

Which membrane covers the outside of the lungs?

What force is created by the attraction of water molecules to one another in the lungs?

Where are the major sinuses located?

What structure closes during a cough to force air upward from the lungs?

What is hyperventilation?

Which structures are part of the upper respiratory tract?

What action do the larger airways perform?

Modern economic growth generally refers to

The textbook defines six determinants of GDP growth, but the factor(s) that determine the production possibility curve itself and, therefore, real GDP potential are