👉 Praelabrum, also known as a labrum or labrum of the esophagus, is an organ that contains the trachea and bronchus. It is located in the middle of the esophagus, between the pharynx and larynx. The praelabrum is comprised of muscular tissue that contracts to push food through the esophagus more efficiently by moving the esophageal sphincter. This contraction helps to maintain a proper opening or closure of
