a
increase in the volume of the thoracic cavity
b
upward movement of the ribs
c
relaxation of the diaphragm
d
contraction of the intercostal musles
Explanation
Correct Option
cVideo Explanation
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Discussions (5)

darkypearl
11 years ago
NEVER!!
an increase in air pressure of d thoraxic cavity is due to a decrease in volume and dis results2exhaltion.
while an increase in volume of d thoraxic cavity is due to a decrease in pressure whch results2inhaltion.
SO D ANS IS C, because in exhaltion
the diaphragm and d intercostal muscle relax

domaingal2020
5 years ago
Pls verify your answers before posting.
Your answer is wrong.
During inhalatio/inspiration, the thoracic cavity increases in both volume and pressure.

