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The neck of the urinary bladder.
See also: cervix
pl. cervices; neck; the front portion of the neck (collum), or a constricted part of an organ (e.g. cervix uteri, see below).
incomplete fusion of the müllerian ducts leads to duplication of all or parts of the female genital tract. In cows one of these is a duplication of the cervix but with only one uterus. More common is a double external os but a single internal os. Both represent an inconvenience at artificial insemination and are detectable on rectal or vaginal examination.
the narrow caudal end of the uterus that opens into the vagina.
the caudal constricted part of the urinary bladder, proximal to the opening of the urethra.