Cigarette smoke irritates cells in the bronchi and this irritation triggers special cells to produce a layer of mucus designed to trap the foreign particles irritating the cells. This layer of mucus is then suppose to be swept away by the Cilia, though the tar found in cigarette smoke slows the action of the cilia. This tar accumulates in the mucus layer, because the cilia are not able to respond due to the presence of this tar. In conclusion, the mucus layer will gradually grow over time because the cilia will not be able to sweep away the accumulated foreign particles.
A tube containing cilia is called a trachea. The trachea is part of the respiratory system and it helps to move mucus and debris away from the lungs by the beating action of the cilia.
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The trachea is lined with cilia, which are tiny hair-like structures that beat in a coordinated manner to sweep away particles and dust trapped in mucus towards the throat where they can be expelled by coughing or swallowing.
Mucous membranes and cilia in the trachea trap and eliminate particulate matter from inhaled air. The membranes also warm and moisten incoming air.
The tube is known as the trachea, or windpipe. It serves as a passageway for air to travel in and out of the lungs. The rings of cartilage help keep the trachea open, while the cilia and mucous membrane function to trap and remove any foreign particles or debris from the air before it reaches the lungs.
The hairs on the trachea are called Cilia and are for helping lifting up the mucus up the throat. Smoking can kill these hairs and they will have to swallow the mucus.=D
In the lining of the trachea, bronchi, and bronchioles.
Cilia.
The combination of cilia and mucous helps to filter out solid particles from the air.
Smoking damages the cilia, tiny hair-like structures lining the trachea and respiratory tract, which play a crucial role in clearing mucus and debris. The chemicals in cigarette smoke paralyze and eventually destroy these cilia, impairing their ability to move mucus out of the airways. This leads to a buildup of mucus and pathogens, increasing the risk of infections and respiratory issues. As a result, the natural cleaning mechanism of the trachea is significantly hindered.
For a human who has smoked and destroyed the cilia by coating the inner wall of the trachea with tar, the mucus that is secreted will have no mechanism to bring it up the trachea to be swallowed except for the 'smoker's hack', a chronic cough that brings up the phlegm from the lungs. Those cilia do not regenerate so, the person will have the 'smoker's hack' for the rest of his life.
The cilia are always moving, bacteria or particles of dust trapped in the mucus are moved away by cilia. The cilia waft the mucus containing bacteria and dust up to the back of the throat, so that it doesn't block up the trachea and thus keeps it clean.