Final answer:
Esophageal motility disorders result in dysphagia related to impaired peristaltic movements during the esophageal phase of deglutition, which is the process of moving food from the mouth to the stomach.
Step-by-step explanation:
The type of dysphagia seen with esophageal motility disorders pertains to difficulties in swallowing due to issues with the esophageal phase of deglutition. During the esophageal phase, coordinated muscular contractions known as peristalsis move the food bolus toward the stomach. However, when there are disruptions in the neuromuscular control, which is managed by the medulla oblongata, or the muscular actions of the esophagus, the result can be dysphagia. Problems with the circular and longitudinal muscle layers of the muscularis, which are responsible for the propulsion of the bolus, can lead to abnormal peristaltic movements and subsequently, issues with swallowing.