In humans, process of inhalation and exhalation takes place by
A. action of ribs
B. action of diaphragm
C. action of ribs and diaphragm
D. none of these
Answer:C
In humans, process of inhalation and exhalation takes place by
A. action of ribs B. action of diaphragm C. action of ribs and diaphragm D. none of these