Why Don't Bronchioles Need This Support?

Marcus Vance
Marcus Vance
• • 6 min read

As Stated, These Bronchioles Do Not Have Hyaline Cartilage to Maintain Their Patency. Instead, They Rely on Elastic Fibers Elastic Fibers Elastic Fibers (Or...

Why Don't Bronchioles Need This Support?

As stated, these bronchioles do not have hyaline cartilage to maintain their patency. Instead, they rely on elastic fibers

elastic fibers
Elastic fibers (or yellow fibers) are an essential component of the extracellular matrix composed of bundles of proteins (elastin) which are produced by a number of different cell types including fibroblasts, endothelial, smooth muscle, and airway epithelial cells. ... Elastic fibers include elastin, elaunin and oxytalan.
› wiki › Elastic_fiber
attached to the surrounding lung tissue for support. The inner lining (lamina propria) of these bronchioles is thin with no glands present, and is surrounded by a layer of smooth muscle.

How are bronchioles supported?

Structural support of the bronchioles comes from their being imbedded in the connective tissue framework of the lung. The bronchioles contain a continuous circular layer of smooth muscle that is believed to be regulated by the parasympathetic nervous system. The mucosa is continuous with that of the bronchi.

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Why are the bronchioles more prone to collapsing?

The bronchioles lack hyaline cartilage, which surround the bronchi and keeps them from collapsing. ... This smooth muscle tissue is sometimes prone to contract, reducing the size of the bronchioles.

Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher
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Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.