MRCP UK EXAMINATIONS

Detailed explanation-1: -The primary peristaltic wave forces the bolus down the esophagus and into the stomach in a wave lasting about 8–9 seconds.

Detailed explanation-2: -Esophageal Phase – involuntary phase in which the upper esophageal sphincter contract to move the bolus deeper into the esophagus; peristaltic contractions then move the bolus into the stomach in less than 8 seconds.

Detailed explanation-3: -If we consider individual peristaltic events, an even greater variation can be seen. The left ureter has a maximum instantaneous rate of 17.6 waves/min and a minimum of 4.3 waves/min. This is a fourfold difference. The right ureteral rate ranges from 16.7 to 2.5 waves/min.

Detailed explanation-4: -Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.

Detailed explanation-5: -Peristalsis occurs throughout your GI tract, but especially in your esophagus. When you swallow, your throat (pharynx) begins the process by pushing food and fluids down into your esophagus (food pipe), which leads to your stomach.