Not that sphincter but yes they do have one of their own.
outer anal sphincter
What is the function of the cardiac sphincter?
cricopharyngeal sphincter
ileocecal sphincter (valve)
cardiac sphincter; or gastroesophageal sphincter; or lower esophageal sphincter (LES); or esophageal sphincter from http://en.wikipedia.org/wiki/Cardia
The pyloric sphincter regulates passage of chymefrom the stomach
Sphincter of Oddi.
cardiac sphincter/lower esophageal sphincter (LES)
What is the function of the cardiac sphincter?
the sphincter muscles are unable to keep the bladder closed (intrinsic sphincter deficiency, ISD).
the sphincter that separates the stomach from the small intestine is the pyloric sphincter
The internal urethral sphincter an involuntary sphincter that keeps the urethra closed when urine is not being used. The external urethral sphincter is fashioned by skeletal muscles as the urethra passes thorugh the pelvic floor.This sphincter is voluntary controlled.