ostium histologicum uteri internum

ostium histologicum uteri internum
[TA] histological internal os of uterus: the histological lower limit of the isthmus uteri, which is the level of transition between endometrium undergoing menstrual changes above and cervical mucosa not undergoing such changes below; it may not correspond to the anatomical internal os (o. anatomicum uteri internum).

Medical dictionary. 2011.

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  • ostium anatomicum uteri internum — [TA] anatomical internal os of uterus: the internal orifice of the uterine cervix, marking the anatomical point at which the cervix opens into the corpus uteri; it may not correspond to the histological internal os (o. histologicum uteri… …   Medical dictionary

  • ostium uteri internum — internal os of uterus: the internal orifice of the cervix of the uterus, opening into the cavity of the uterus. The official nomenclature distinguishes the anatomical internal os (o. anatomicum uteri internum, [TA]) from the histological internal …   Medical dictionary

  • ostium — A small opening, especially one of entrance into a hollow organ or canal. SEE ALSO: orifice, opening, os, mouth (2). [L. door, entrance, mouth] o. abdominale tubae uterinae [TA] SYN: abdominal o. of uterine tube …   Medical dictionary

  • internal os of uterus histological — ostium histologicum uteri internum …   Medical dictionary

  • os — 1. [NA] The mouth. 2. Term applied sometimes to an opening into a hollow organ or canal, especially one with thick or fleshy edges. SEE ALSO: mouth (2), ostium, orifice, opening. [L. mouth] …   Medical dictionary

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