**5. Conclusion**

The physiological function of the esophagus in healthy people is very simple: to actively transport solids and liquids from the pharynx to the stomach. It has no digestive, absorptive, metabolic, or endocrine functions, but in laryngectomized persons, esophagus takes one more function. In such changed anatomical condition, the esophagus has a key role in voice speech rehabilitation of laryngectomized patients because the esophageal and tracheoesophageal speech are the only acceptable solution of substitute alaryngeal speech. The esophagus gets very important function at alaryngeal phonation as air reservoir, the upper esophageal sphincter gets the function as air activator and the pharyngoesophageal segment gets the function of the voice generator, thus allowing the function of the voice resonators.
