| Mayer can even imagine a drive that strengthens flagging human sphincters. |
| An esophageal manometry revealed a normal function of the upper and lower esophageal sphincters. |
| Ureteral spasm, spasm of vesical sphincters and urinary retention have been reported with opiates. |
| I wouldn't be surprised if the thin eating champs were born with weak pyloric sphincters, or exhibit higher capacity for smooth muscle relaxation. |
| In the urogenital tract, there are sphincters at the exit from the bladder. |
| Muscular sphincters may exist anteriorly or posteriorly in the pharyngeal bulb. |
