An investigator
studying new drug delivery systems administers an aerosol containing 10 μm sized particles to a healthy subject via
a special mask. These particles are found to deposit
on the surface of the respiratory tract with a pseudostratified epithelium.
Which of the following mechanism is the most likely way of clearance of the
particulate matter in this subject?

Question

An investigator
studying new drug delivery systems administers an aerosol containing 10 μm sized particles to a healthy subject via
a special mask. These particles are found to deposit
on the surface of the respiratory tract with a pseudostratified epithelium.
Which of the following mechanism is the most likely way of clearance of the
particulate matter in this subject?

Answer

none of the above

Answer

diffusion into
pulmonary capillaries

Answer

phagocytosis by
alveolar macrophages

Answer

the movement of
cilia, so-called mucociliary clearance

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An investigator studying new drug delivery systems administers an aerosol contai...

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