Answer :
Air enters the nostrils
passes through the nasopharynx,
the oral pharynx
through the glottis
into the trachea
into the right and left bronchi, which branches and rebranches into
bronchioles, each of which terminates in a cluster of
alveoli
Only in the alveoli does actual gas exchange takes place. There are some 300 million alveoli in two adult lungs. These provide a surface area of some 160 m2 (almost equal to the singles area of a tennis court and 80 times the area of our skin!).
ANSWER :
The pathway of the air travelling through the respiring system is explained in details below -
1. Nostrils : Air first enters the nostrils where the air gets purified.
2. Pharynx : Then the air goes through the pharynx.
3. Larynx : This is responsible for causing the air to vibrate when it out of the organ lungs.
4. Trachea : It directs the air to go into the lungs.
5. Bronchi : The lower terminal of trachea gets divided into bronchioles which enters the lungs.
6. Alveoli : Bronchioles then finally enters the alveoli present in lungs. Here gases gets exchanged through diffusion.
