What pushes the bolus to the throat to be swallowed?

The bolus is pushed to the throat primarily by the action of the tongue, which presses against the hard palate to propel the food backward. This action is part of the swallowing process, known as deglutition. As the bolus reaches the back of the mouth, sensory receptors trigger the swallowing reflex, coordinating muscle contractions in the throat to facilitate the movement of the bolus into the esophagus.