Tetanus (or lockjaw) is a serious infection caused by Clostridium tetani bacteria which produce a toxin that affects the brain and nervous system. The toxin leads to stiffness in the jaw muscles as well as other muscles.
The function of the epiglottis is that it allows air to pass through the larynx and into the rest of the respiratory system. When swallowing food or drink, it covers the entrance to the larynx to prevent food and drink from entering the trachea (windpipe).
The epiglottis is a structure found in the throat. Specifically, it's located behind the tongue and above the larynx. Elastic cartilage forms this thin, teardrop-shaped flap. A mucous membrane coats the epiglottis.The side facing the mouth is covered in cells similar to those in the rest of the mouth, whereas the backside is covered with cells resembling those of the larynx. The epiglottis is held in place by two ligaments.he esophagus delivers food to the lower digestive system whereas the larynx is the passageway for air to enter the lungs. To prevent food or drink from getting into the lungs, the epiglottis moves to cover the larynx when swallowing. This movement is accomplished by muscles reacting to contact with food or drink.