Question

One of the processes involved in asthma is bronchoconstriction (bronchospasms). These spasms can close the airway....

  1. One of the processes involved in asthma is bronchoconstriction (bronchospasms). These spasms can close the airway. Given what you answered in the question above, what airway structures are closed? Why are these areas closed, but not the rest of the bronchial tree?
Science   Anatomy-And-Physiology   
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Answer #1

In broncho spasm Airways narrowed as a result of the inflammatory response cause wheezing.Bronchospasm or abronchial spasm is a sudden constriction of the muscles in the walls of the bronchioles. It is caused by the release (degranulation) of substances from mast cells or basophils under the influence of anaphylatoxins.

Asthma attacks are caused by smooth muscle spasm in the bronchial tree. ... Why are these areas closed but not the rest of the bronchial tree? distal bronchioles (terminal bronchioles); These airways lack cartilage that is present in the rest of the conducting zone.

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