cloacal sphincter

cloacal sphincter

the developing muscle surrounding the caudal end of the cloaca is sometimes referred to as the cloacal sphincter; after division of the cloacal membrane by the urorectal septum, the dorsal part of the sphincter forms the external anal sphincter.

cloacal sphincter

the developing muscle surrounding the caudal end of the cloaca in the embryo. Its posterior part will become the external anal sphincter and its anterior part becomes the superficial transverse perineal, bulbospongiosus, and ischiocavernosus muscles.
References in periodicals archive ?
The probe was inserted into the cloacal sphincter to a premeasured line at 2-cm depth, and body temperature was recorded at 30 seconds after insertion into the cloaca.
5 cm in diameter was present around the cloaca, extending through the cloacal sphincter.
According to the owner, the skin wound appeared to have affected the cloacal sphincter resulting in reduced sphincter function.