At the time of inspiration, _________ takes place.
A. relaxation in external intercostal muscle
B. relaxation in diaphragm
C. contraction in diaphragm
D. no effect on diaphragm
Answer:C
At the time of inspiration, _________ takes place.
A. relaxation in external intercostal muscle B. relaxation in diaphragm C. contraction in diaphragm D. no effect on diaphragm