| anal sphincter | 2.50 | ...the anal sphincter. | ||
| external sphincter | 1.38 | The occurrence and duration of external anal sphincter activity during rectal distension. | ||
| internal sphincter | 0.79 | The rectoanal inhibitory reflex was measured using the threshold for internal sphincter relaxation. | ||
| esophageal sphincter | 0.59 | The problem lies in the muscle that plugs the stomach, called the lower esophageal sphincter. | ||
| lower sphincter | 0.26 | The problem lies in the muscle that plugs the stomach, called the lower esophageal sphincter. |