The opening of the oropharynx to the oesophagus is called-----------.

The pharynx serves as a common passage for food and air. It opens into two distinct tubes: the trachea (windpipe) and the oesophagus (food pipe).

The opening of the pharynx into the trachea is called the glottis, which is guarded by a cartilaginous flap called the epiglottis to prevent the entry of food into the respiratory tract.

The opening of the oropharynx into the oesophagus is called the gullet. Through the gullet, the food passes into the oesophagus during the process of swallowing.

Answer: gullet