Non progressive contraction of Esophagus are:
• Tertiary contractions are simultaneous, non progressive, non peristaltic waves that can occur throughout the esophagus
• Tertiary contractions represent uncoordinated contractions of the smooth muscles that are responsible for the ‘Cork Screw’ appearance of esophageal spasm on Barium swallow
• Tertiary contractions do not have a physiological function and may be observed in the elderly and in patients with esophageal motility disorders
Primary
Secondary
Tertiary
Quaternary