julietforever
contestada

In which part of the human respiratory system does actual oxygen exchange take place?

A.
bronchi

B.
trachea

C.
diaphragm

D.
alveoli

Respuesta :

beanthemachine
The answer is D: alveoli. These small sacks are how the oxygen is exchanged into the bloodstream in exchange for carbon dioxide.
ssaverance

i think it is D alveoli

Otras preguntas