Which of the following is an example of a bridged bicyclic system? 
Definitions:
Vital Capacity
Maximum amount of air moved in and out of lungs with forced inhalation and exhalation.
Forced Inhalation
An involuntary or voluntary act of taking air into the lungs through the use of respiratory muscles more forcefully than in normal breathing.
External Intercostal Muscles
Muscles located between the ribs that expand the chest cavity for inhalation by elevating the ribs.
Inhalation
The act of taking air into the lungs through the nose or mouth, essential for oxygenating the blood and removing carbon dioxide.
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