NACA Animal Control Officers Test 2025 – 400 Free Practice Questions to Pass the Exam

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What defines a collapsing trachea?

Thickened walls of the trachea

Weak, cartilaginous rings

A collapsing trachea is primarily characterized by weak, cartilaginous rings that fail to maintain their structural integrity. This condition is most commonly observed in small breed dogs and can lead to a narrowing of the airway, causing breathing difficulties and a characteristic honking cough.

The cartilaginous rings are essential for providing strength and rigidity to the trachea. When these rings are weak, they are unable to support the airway during inhalation and exhalation, resulting in collapse, especially during times of increased respiratory effort or stress. This is why the definition of a collapsing trachea specifically highlights the weakness of these rings, leading to significant clinical symptoms.

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Inflammation of the bronchial tubes

Complete closure of the trachea

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