"Sphincter tone" refers to the level of muscle tightness or tension in a ring-like muscle called a sphincter. This muscle encircles and controls the opening and closing of certain body parts, like the eyes, mouth, or anus. So,
sphincter tone basically refers to how relaxed or contracted these muscles are.
Full definition
«Acidic substances such as lemon juice and vinegar may help reduce acid reflux and heartburn by
maintaining sphincter tone between the esophagus and stomach and improving the health of the stomach lining,» Dr. Sukol says.
Heavy exercise can induce changes in motility throughout the intestinal tract resulting in decreased peristalsis, decreased lower
esophageal sphincter tone and increased transient lower sphincter relaxation.
Phenoxybenzamine, for example, is used mainly to decrease internal
urethral sphincter tone, at a dose of 0.5 mg / kg PO q24h.
Cats may experience tremors, shivering, rigidity, loss of righting reflexes, lethargy, diarrhea and loss of
anal sphincter tone.