If Event a and Event B Cannot Occur at the Same

question 148

Multiple Choice

If event A and event B cannot occur at the same time,then A and B are said to be

• A)mutually exclusive
• B)independent
• C)collectively exhaustive
• D)None of these choices.

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Definitions:

Trachea

Also known as the windpipe, it is a large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs.

Primary Bronchi

The two main branches of the trachea that lead directly into the lungs, providing the passage for air to enter and leave the lungs.

Pharynx

The muscular tube that extends from the back of the nasal cavities and mouth down to the esophagus and larynx, serving both respiratory and digestive functions.

Larynx

Also known as the voice box, it is the part of the respiratory tract involved in sound production, breathing, and protecting the trachea against food aspiration.