pathway of air simple diagram
Answers
Explanation:
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Pathway of air:-
★Air usually entres the energy the body through the nostrils.
★Air is filtered. The moist surface of the lining of the nasal cavity, and the hair growing from its sides, remove some of the tiny particle of dirst in the air. In addition, as the inhaled air passes through the nasal cavity,it's temperature is brought close to that of the body, and its takes up water vapour so that it becomes more moist than before.
★Warming and moistening goes on this common passage of digestive and respiratory system. Epiglottis , a flap like muscular value controls movement of food and air towards their respective passages.
★This stiff box contains our vocal cords. When air passes out of the lungs and over the vocal cords,it's causes them to vibrate. This produces sounds on the basic of our speech,song etc.
★Wind pipe channeling air to lungs. Touch your throat to feel the tube like structure.
★At its lower end the trachea or the wind pipe divide into two bronchi -one leading to each lung.
★Each bronchi is further divided into smaller and smaller branches called bronchioles.
★This finally terminate In clusters of air sacs called alveoli in the lungs which are very small and numerous . Gaseous exchange takes place here as blood capillaries take up oxygen and expel carbon dioxide.
★Blood carries oxygen, to each and every cell of the body and collect CO2 from them.
✈︎The whole passage from nostrils to alveolus is moist and warm.
