The jaw jerk reflex was originally described by in 1882. 31 In a positive response, sudden stretching of the masseter muscle causes reflex contraction, moving the jaw briskly upward. With the patient's jaw slightly open, the clinician can elicit the reflex by tapping with a reflex hammer directly on the chin or on a tongue blade resting on the lower teeth or tongue. An exaggerated .
· openjaw bookings can be one of the following: destination openjaw, where a passenger flies from one city to another but returns to the original city from a different place (miafra, mucmia), origin openjaw, where the passenger leaves from one city to another but returns to a different place (miajfk, jfkfll), or double openjaw with two .