What Is the Correct Order of Passageways, from Proximal to Distal

question 21

Multiple Choice

What is the correct order of passageways, from proximal to distal?

• A) terminal bronchiole, respiratory bronchiole, alveolar duct
• B) terminal bronchiole, alveolar duct, respiratory bronchiole
• C) respiratory bronchiole, terminal bronchiole, alveolar duct
• D) alveolar duct, respiratory bronchiole, terminal bronchiole

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Definitions:

Depolarization

The loss of polarity, or opposite charges inside and outside; the electrical impulse that initiates a chain reaction resulting in contraction.

Electrical Impulse

A rapid, transient electrical charge that travels along the membrane of a nerve or muscle cell.

Chain Reaction

A sequence of reactions where a reactive product or by-product causes additional reactions to take place.

P-R Interval

A measurement on an electrocardiogram (ECG) reflecting the time between the onset of atrial depolarization and the onset of ventricular depolarization; important in diagnosing cardiac conditions.