Respiratory Anatomy

Respiratory passageways perform all of the following functions EXCEPT

• allow air to reach the lungs

• purify air

• humidify air

• exchange gases

which of the following is NOT a function of the paranasal sinuses

• they contain olfactory receptors

• lighten the skull

• produce mucus

• act as speech resonance chambers

cilia of the trachea propel contaminated mucus

• toward the nose to be sneezed out

• toward the throat to be swallowed or spat out

• toward the epiglottis to be coughed out

• toward the lungs to be encapsulated

Which of the following is NOT true of the lungs

• narrower portion of each lung is called the apex

• the bases rest on the diaphragm

• both lungs have 2 lobes

• the right lung has 3 lobes

Which of the following is NOT true of the pleura

• it lines the lungs

• lines the thoracic cavity

• produces pleural fluid

• it contains ciliated mucosa