Question 1
Most inspired particles such as dust fail to reach the lungs because of the ________.
◦ porous structure of turbinate bones
◦ action of the epiglottis
◦ abundant blood supply to nasal mucosa
◦ ciliated mucous lining in the nose
Question 2
Which of the following is
incorrect?
◦ Gas flow equals pressure gradient over resistance.
◦ Resistance equals pressure gradient over gas flow.
◦ The amount of gas flowing in and out of the alveoli is directly proportional to the difference in pressure or pressure gradient between the external atmosphere and the alveoli.
◦ Pressure gradient equals gas flow over resistance.