| isthmus of uterus | An elongated constriction at the junction of the body and cervix of the uterus. Synonym: isthmus uteri, Guyon's isthmus, orificium internum uteri, os uteri internum, ostium uteri internum. (05 Mar 2000) |
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| one-horned uterus | An obsolete term for unicorn uterus. (05 Mar 2000) |
| opening of uterus | The vaginal opening of the uterus. Synonym: ostium uteri, mouth of the womb, opening of uterus, orificium externum uteri, os uteri externum, ostium uteri externum. (05 Mar 2000) |
| triangular uterus | Uterus bicornis in which the fundus between the two cornua is broad and flat. Synonym: triangular uterus, uterus incudiformis, uterus triangularis. (05 Mar 2000) |
| external os of uterus | The vaginal opening of the uterus. Synonym: ostium uteri, mouth of the womb, opening of uterus, orificium externum uteri, os uteri externum, ostium uteri externum. (05 Mar 2000) |
| unicorn uterus | A uterus in which only one lateral half exists, the other half being undeveloped or absent. Synonym: uterus unicornis. (05 Mar 2000) |
| uterus | <anatomy> The hollow muscular organ in female mammals in which the fertilized ovum normally becomes embedded and in which the developing embryo and foetus is nourished. In the nongravid human, it is a pear shaped structure, about 3 inches in length, consisting of a body, fundus, isthmus and cervix. Its cavity opens into the vagina below and into the uterine tube on either side at the cornu. It is supported by direct attachment to the vagina and by indirect attachment to various other nearby pelvic structures. Synonym: metra. Origin: L., Gr. Hystera (18 Nov 1997) |
| uterus acollis | A uterus with atresia or absence of the cervix. (05 Mar 2000) |
| uterus arcuatus | A uterus with a depression at the fundus; an incomplete uterus bicornis. Synonym: uterus arcuatus. (05 Mar 2000) |
| uterus bicornate bicollis | See: bicornate uterus. (05 Mar 2000) |
| uterus bicornate unicollis | See: bicornate uterus. (05 Mar 2000) |
| uterus bicornis | A uterus that is more or less completely divided into two lateral horns as a result of imperfect fusion of the paramesonephric ducts; it differs from septate uterus, in which there is no external mark of separation; in uterus bicornis, the cervix may be single (uterus bicornate unicollis) or double (uterus bicornate bicollis). Synonym: bifid uterus, uterus bicornis, uterus bifidus. (05 Mar 2000) |
| uterus bifidus | A uterus that is more or less completely divided into two lateral horns as a result of imperfect fusion of the paramesonephric ducts; it differs from septate uterus, in which there is no external mark of separation; in uterus bicornis, the cervix may be single (uterus bicornate unicollis) or double (uterus bicornate bicollis). Synonym: bifid uterus, uterus bicornis, uterus bifidus. (05 Mar 2000) |
| uterus biforis | Septate uterus in which the cervix is divided into two by a septum. Synonym: double-mouthed uterus, uterus biforis. (05 Mar 2000) |
| uterus bilocularis | A uterus divided into two cavities by an anteroposterior septum. Synonym: bipartite uterus, uterus bilocularis, uterus bipartitus, uterus septus. (05 Mar 2000) |