Question : An exhausted student was attending a lecture. After 30 minutes or so, he lost interest and he let go with ia tremendous yawn. To his great distress he couldn't his mouth-his lower jaw was locked open. What do you think would have caused it?

Question : An exhausted student was attending a lecture. After 30 minu

1.	Question : An exhausted student was attending a lecture. After 30 minutes or so, he lost interest and he let go with ia tremendous yawn. To his great distress he couldn't his mouth-his lower jaw was locked open. What do you think would have caused it?
Answer» Solution :Some times the JAW remains OPEN and does not CLOSE after yawning. This is due to dislocation of temporomandibular joint LOCATED between the temporal bone and MANDIBLE (hinge joint).