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it reduces the swelling
Wiki User
∙ 12y ago
Wiki User
∙ 12y agocan bronchioles affect muscle
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What muscle controls the size of the bronchioles in the lungs?
SmooTh muscle
What is bronchioles filled with?
Bronchioles are approximately 1mm or less in diameter and their walls consist of ciliated cuboidal epithelium and a layer of smooth muscle.
What part of the respiratory tree has the largest proportion of smooth muscle?
Bronchioles
The diameter of bronchioles can change because their walls contain?
Smooth Muscle tissue relaxation and contraction is responsible for dilation and constrictions of the bronchioles, respectively.
What is an example of a smooth involuntary muscle?
ones that line the walls of the trachea and bronchioles
What small structures located within the bronchial tree are composed primarily of smooth muscle?
Bronchioles are smaller tube divisions of bronchi. Walls of bronchioles contain smooth muscle and no cartilage. This helps in contraction and relaxation which allows the flow of air to alveoli.
What is the function of smooth muscle in the bronchioles?
Cilia play very important role in bronchioles. They push the foreign particles outward.
What is the medical term meaning contraction of the smooth muscle in the walls of the bronchi and bronchioles that tighten and squeeze the airway shut?
Bronchoconstriction or bronchospasm is the medical term that refers to the contraction of the smooth muscle in the walls of the bronchi and bronchioles that tighten and squeeze the airway shut.
Do bronchioles have cartilage rings?
No, cartilage is only contained up until the bronchi. The bronchioles and onward do not contain any cartilage rings, only smooth muscle.
Name three structural changes that occur in the bronchi as they branch into bronchioles?
The diameter of the airways diminishes, the epithelium changes, cartilage disappears early in the tertiary bronchi, and the bronchioles have only smooth muscle spiraled around them!
What is the functional importance of the decrease in cartilage and increase in smooth muscle in the lower respiratory passageways?
The smooth muscle in the walls of the bronchioles is very sensitive to the concentration of carbon dioxide. A rising level of CO2 causes the bronchioles to dilate. This lowers the resistance in the airways and thus increases the flow of air in and out.
The changes that occur as the bronchial tree gets smaller are what?
Support structures change: irregular plates of cartilage replace the cartilage rings, and by the time the bronchioles are reached, the tube walls no longer contain supportive cartilage. Epithelium type changes: the mucosal epithelium things as it changes from pseudostratified columnar to columnar and then to cuboidal in the terminal bronchioles. Mucus-producing cells and cilia are sparse in the bronchioles. For this reason, most airborn debris found at or below the level of the bronchioles must be removed by macrophages in the alveoli. Amount of smooth muscle increases: the relative amount of smooth muscle in the tube walls increases as the passageways become smaller. A complete layer of circular smooth muscle in the bronchioles and the lack of supporting cartilage (which would hinder construction) allows the bronchioles to provide substantial resistance to air passage.
