Vaginal portion of cervix
Encyclopedia
The vaginal portion of the cervix projects free into the anterior wall of the vagina
between the anterior and posterior fornices vaginae.
On its rounded extremity is a small, depressed, somewhat circular aperture, the external orifice of the uterus
, through which the cavity of the cervix communicates with that of the vagina.
The external orifice is bounded by two lips, an anterior and a posterior, of which the anterior is the shorter and thicker, although, on account of the slope of the cervix, it projects lower than the posterior.
Normally, both lips are in contact with the posterior vaginal wall.
Vagina
The vagina is a fibromuscular tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. Female insects and other invertebrates also have a vagina, which is the terminal part of the...
between the anterior and posterior fornices vaginae.
On its rounded extremity is a small, depressed, somewhat circular aperture, the external orifice of the uterus
External orifice of the uterus
The external orifice of the uterus is a small, depressed, somewhat circular aperture on the rounded extremity of the vaginal portion of the cervix. Through this aperture, the cervical cavity communicates with that of the vagina.The external orifice is bounded by two lips, an anterior and a posterior...
, through which the cavity of the cervix communicates with that of the vagina.
The external orifice is bounded by two lips, an anterior and a posterior, of which the anterior is the shorter and thicker, although, on account of the slope of the cervix, it projects lower than the posterior.
Normally, both lips are in contact with the posterior vaginal wall.