Select the correct sequence of the events that occur during inspiration. internal intercostals and diaphragm contract, gas pressure in the lungs decreases, size of thoracic cavity increases, air flows in internal intercostals and diaphragm contract, size of thoracic cavity increases, gas pressure in the lungs decreases, air flows in external intercostals and diaphragm contract, size of thoracic cavity increases, gas pressure in the lungs increases, air flows in external intercostals and diaphragm contract, size of thoracic cavity increases, gas pressure in the lungs decreases, air flows in