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They open up to make the lumen larger.

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17y ago

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What happens to your body when you get angry?

You are activating the sympathetic nervous system, "fight or flight" mode. Eyes dilate, your heart rate increases, gastrointestinal system slows, bronchioles dilate, etc.


Which type of bronchioles don't have cartilage?

Bronchioles don't have cartilage because they need to be able to constrict and dilate


Which drug is used to dilate the bronchioles?

•Beta-agonists for asthma -Dilate bronchioles but speed up the heart because both ß1 and ß2 receptors are stimulated -Specific ß2 -agonists just dilate the bronchioles •Salbutamol (Ventolin) is a specific agonist of the ß2 receptor and provides tremendous relief for asthma sufferers.


What happens When you look at someone you find pretty What happens to your pupils?

Your irises may dilate.


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.


Does dilate trachea and bronchioles caused by parasympathetic?

No, dilation of the trachea and bronchioles is typically caused by the sympathetic nervous system, which leads to relaxation of smooth muscles in the airways. Parasympathetic activity usually causes constriction of the airways.


What causes pupils to dilate?

light.. or if someones intrerested in you then that happens as an unconcious effect


What is indication of nebulizer?

Nebuliser helps in administration of any type of drug(bronchodilator) till the level of bronchioles. as it creates a mist of a drug instilled by breaking drug particles ,s o that they reach till the bronchioles. so as to dilate the bronchi, with its warm effect also helps in loosening secrections. especially, in cases of COPD, ASTHMA,etc....


What are the 3 types of bronchioles?

The three types of bronchioles are terminal bronchioles, respiratory bronchioles, and conducting bronchioles. Terminal bronchioles are the smallest airways in the respiratory system that lead to the respiratory bronchioles where gas exchange occurs. Conducting bronchioles are larger airways that branch off the main bronchi and help to conduct air to the smaller bronchioles.


What are the different types of bronchioles?

There are the bronchi and bronchioles


Which is the best description of bronchioles?

description of the bronchioles


What happens to both pupils when light enters?

Pupils "constrict" when light enters, and "dilate "when the lighting dims