Question

diffusion of gases occur in the alveolar region only and not in the other part of respiratory system why

Answer 1

⏪ Alveolar sacs provides a large surface area for the diffusion of gas .


⏪ From which, the oxygen needs of the whole body can be met.

⏪ These alveolar sacs also have a wide network of blood vessels, due to which oxygen after entering alveoli reaches the blood and then haemoglobin pigment present in blood transports oxygen to each and every part of the body.


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Hope it helps

Thanks !!

Answer 2

why your heart beats not the other part of the body? whatt type of question is this?

but let me answer for you because the pathway of breathing starts from external nostrils followed by internal nares-->nasopharynx---> glottis---> trachea>primary sec and tertiary bronchi ---> bronchioles ----> alveolar ducts---> alveoli.

Hope you got it.