A Small Amount of Fluid Is Contained in the Pleural

question 68

Multiple Choice

A small amount of fluid is contained in the pleural cavity to

• A) promote the exchange of nutrients with both lungs.
• B) allow gas exchange between the lungs and the blood stream.
• C) allow white blood cells and macrophages access to foreign antigens entering the body through air.
• D) function as a lubricant as the lungs move during ventilation.
• E) serve as a shock absorber for the lungs during body movement.

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Definitions:

Production Function

Describes the relationship between the quantities of inputs used in production and the quantity of output produced, illustrating how input changes affect output.

Returns To Scale

Refers to how the output of a production process changes as all input quantities are scaled up or down.

Marginal Products

The additional output that is produced by employing one more unit of a specific input, while keeping other inputs constant.

Exponents

mathematical operations denoting how many times a number, the base, is multiplied by itself.