The canine cervix and TCI
Keywords: canine, cervix, insemination, artificial, TCI,
This image shows the dorsal vaginal fold (dvf) and the cervical canal which has been opened. A metal rod lies within the uterus. The red arrows show the circuitous route that must be followed by the insemination instrument for transit cervical insemination. Because the external cervical os lies on the ventral surface of the dorsal vaginal fold it is sometimes extremely difficult or impossible to advance an insemination instrument through the external cervical os and into the cervical canal. That process is known as trans-cervical insemination or TCI.
The inset image shows the external cervical opening, located at the cranial- ventral portion of the dorsal vaginal fold. A metal probe has been passed through the cervical canal into the uterus.