Respiratory system
The respiratory tract or even breathing apparatus include among others the nose, the throat, the larynx, the trachea and the bronchi. The bronchial system is the largest part of the senior air ways and is embedded in the lungs "bronchial tree". Tasks include the particle filter, moisten the air and heat. In the cold season the so-called cold diseases with symptoms such as cough, runny nose or sore throat noticeable again.
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