Cognitive behavior therapy (CBT) is a type of short-term treatment that can be highly effective for many disorders. Learn more about how CBT works. Cognitive behavior therapy (CBT) is a type of short-term treatment that can be highly effective for many disorders.
The epiglottis prevents food from entering the trachea. When swallowing, the epiglottis covers the opening of the larynx, thus blocking food and drink from entering the trache â¦ a. 9 people found this useful.
The food is thrust from the oral cavity into the throat (pharynx). At the same time, two other events occur: A muscular valve at the bottom of the pharynx opens, allowing food to enter the esophagus, and other muscles close the airway (trachea) to prevent food from entering the airways. This second phase of swallowing takes less than half a second.