The Function of the "Ciliary Escalator" Is to

question 17

Multiple Choice

The function of the "ciliary escalator" is to

• A) remove microorganisms from the gastrointestinal tract.
• B) propel inhaled dust and microorganisms toward the throat.
• C) remove microorganisms from the upper respiratory tract.
• D) remove microorganisms from the lower respiratory tract.
• E) trap inhaled dust and microorganisms in mucous and propel it away from the lower respiratory tract.

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Definitions:

Variable Costs

Costs that change in proportion to the level of production or sales, such as raw materials and direct labor.

Activity Level

A measurement of the volume of production or the quantity of services provided.

Activity Bases

Measures that assign costs to cost objects based on their use of activities; used in activity-based costing.

Mixed Cost

A cost consisting of both fixed and variable components and changes in response to variations in production or sales levels.