Which respiratory-associated muscles would contract if you were to blow up a balloon?
A) External intercostals would contract and the diaphragm would relax. B) Diaphragm would contract, external intercostals would relax. C) Internal intercostals and abdominal muscles would contract. D) none of the above
Air moves out of the lungs when the pressure inside the lungs is ________.
A) equal to the pressure in the atmosphere B) less than the pressure in the atmosphere C) greater than the pressure in the atmosphere D) none of the above