Which respiratory- associated muscles would contract if you were to blow up a balloon?
A) internal intercostals and abdominal muscles would contract
B) external intercostals would contract and diaphragm would relax
C) diaphragm would contract, external intercostals would relax
D) diaphragm contracts, internal intercostals would relax

Question

Quizplus · Accepted Answer

Blowing up a balloon requires forceful exhalation, which involves contraction of the internal intercostals and abdominal muscles to increase pressure in the thoracic cavity and expel air.

Which Respiratory- Associated Muscles Would Contract If You Were to Blow