Indicate the events that occur with inspiration, in the correct order.Multiple ChoiceDiaphragm relaxes; thoracic cavity expands; intra-alveolar pressure increases; air flows into lungs.Diaphragm contracts; thoracic cavity recoils; intra-alveolar pressure increases; air flows into lungs.Diaphragm relaxes; thoracic cavity recoils; intra-alveolar pressure drops; air flows into lungs.Diaphragm contracts; thoracic cavity expands; intra-alveolar pressure drops; air flows into lungs.

During inspiration, the diaphragm __________, causing a(n) __________ in thoracic volume and a(n) __________ in alveolar pressure.Multiple Choicerelaxes; decrease; increasecontracts; decrease; increasecontracts; increase; decreaserelaxes; increase; decrease

Which of the following events does not occur during exhalation in human beings?The inter-costal muscles pull the ribs inwardlyThe volume of thoracic cavity increasesHigh pressure area is created inside the thoracic cavityDiaphragm becomes dome-shaped

Determine what happens when the diaphragm contracts. Hint: Select three options.The lungs shrinkThe lungs expandAir pressure in the lungs increasesAir pressure in the lungs decreasesAir is drawn into the lungs (inhalation)Air is forced out of the lungs (exhalation)

Determine what happens when the diaphragm relaxes.Hint: Select three options.The lungs shrinkThe lungs expandAir pressure in the lungs increasesAir pressure in the lungs decreasesAir is drawn into the lungs (inhalation)Air is forced out of the lungs (exhalation)

Select all of the options that best complete the following sentence. When we exhale:the air has more carbon dioxide than inhaled airthe diaphragm and intercostal muscles relaxthe pressure in the lungs increases, forcing air outthe lungs expand