Reflex dyssynergia is seen primarily in male dogs and rarely in cats. Pakarinen, in Pediatric Surgery Seventh Edition , A ringlike muscle that normally maintains constriction of a body passage or orifice and that relaxes as required by normal physiological functioning. Commonly these myelopathic conditions cause quadriplegia or paraplegia. Classically, this condition has been described in tabes dorsalis, syringomyelia, and diabetes mellitus. Handbook of Veterinary Neurology Fifth Edition ,
anal sphincter (sphincter a´ni) either of two sphincters (the internal and external anal sphincters) that open and close to control evacuation of feces from the anus. Etymology and synonyms. Paradoxical anal contraction during attempted defecation in constipated patients was first described in a paper in , when the term anismus. People with faecal incontinence or leakage of faeces can be helped by undertaking special exercises to strengthen the sphincter muscles. With regular practice, the.