Where in the respiratory system does gas exchange occure?!


Question: Where in the respiratory system does gas exchange occure!?
a) in the pharynx

b) in the trachea

c) int he heart

d) in the alveoli


can someone help!?!?!Www@Answer-Health@Com

Answers:
alveoli!.Www@Answer-Health@Com
D 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!)!.Www@Answer-Health@Com
The alveoli have tiny capillaries that perform the gas exchange!.Www@Answer-Health@Com
Alveoli!.

The capillaries perhaps!?Www@Answer-Health@Com
in the alveoliWww@Answer-Health@Com
D!. final answerWww@Answer-Health@Com


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