These are drawn from the mouth into the air-passage during a sudden inspiratory effort, for example while laughing or sneezing.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
The left fore leg and the right hind leg were affected with a simultaneous convulsion or jerk, corresponding with the inspiratory motions of the chest.
"An Essay on the Influence of Tobacco upon Life and Health"
R. D. Mussey
3. The inspiratory Force.
"Physiology and Hygiene for Secondary Schools"
Francis M. Walters, A.M.