Most Foreign Substances in Inspired Air Fail to Reach the Lungs

question 76

Multiple Choice

Most foreign substances in inspired air fail to reach the lungs because of the

• A) ciliated epithelium and mucus that line the respiratory passages.
• B) abundant blood supply to the nasal mucosa.
• C) porous structure of the nasal conchae.
• D) action of the epiglottis.

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Definitions:

Saving

The portion of income not spent on consumption, often set aside for future investments or expenditures.

Disposable Income

The amount of money individuals or households have available to spend or save after taxes have been accounted for.

Saving

The portion of income that is not spent on consumption but instead is set aside for future use or investment.

Disposable Income

Income left for households to direct into savings and spending after deductions of income taxes.