Why can a light bulb enter a person's mouth but not come out?

First, the mouth is forced to open for too long, and the oral muscles are already stiff, which can't drive joint activities;

Second, the light bulb is too big, and there is not much oral space left, so the joints can't move forward and the light bulb can't be taken out with a bigger mouth.

The mouth can open and close, relying on a very important part-temporomandibular joint, which can rotate and slide and is driven by the surrounding mouth muscles.

Open your mouth within 2cm, only by the rotation of the joint; But after more than 2cm, the joint moves forward, and the average person can open 5 ~ 6 cm at most.

Extended data:

harm

1, the oral muscles and joints are in an abnormal state for a long time, and their functions will be affected in the future.

2, the tongue is oppressed, nausea and retching occur, and if you accidentally vomit and suffocate, it can be fatal.

3, the tongue root shrinks back, which is easy to suffocate.

4, forcibly take the light bulb, the glass is broken, the mouth is not finished, and it may accidentally slide into the airway and digestive tract.

References:

People's Network-What if the light bulb can't be taken out in your mouth? Six ways to save you