In a Continuing Education Course,you Learn That Approximately 85% of Limited

question 10

Multiple Choice

In a continuing education course,you learn that approximately 85% of limited operators who have practiced for 5 or more years suffer from low-back pain. What does this number mean?

• A) Of the total number of limited operators, 85 suffer from low-back pain.
• B) Of every 100 limited operators, 85 suffer from low-back pain.
• C) Every 5 years, 85 limited operators suffer from low-back pain.
• D) Being a limited operator is very unhealthy.

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Definitions:

Diffusion

The movement of molecules or particles from regions of higher concentration to regions of lower concentration.

Physiological Dead Air Space

The volume of the airways where gas exchange does not occur, including parts of the bronchial tree and trachea.

Anatomic Dead Space

The portion of the respiratory system where gas exchange does not occur, including the nose, trachea, and bronchi, where air is moved in and out without being involved in oxygen/carbon dioxide exchange.

Respiratory Membrane

The thin barrier through which gas exchange occurs between the air in the lungs and the blood in capillaries.