Related Experiment Video

Updated: Mar 26, 2026

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri
05:21

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri

Published on: September 12, 2025

693

STRUCTURAL BASIS OF THE VASCULAR HEMOSTATIC MECHANISM IN THE UTERINE CERVIX

Alexander V Prokopchook-Lyckbäck

    Likars'Ka Sprava
    |February 2, 2016
    PubMed

    Insights

    The cervix has a unique vascular structure with arteries surrounded by veins, preventing hemorrhage during childbirth. This specialized angioarchitecture supports cervical dilatation and labor safety.

    Area of Science:

    • Anatomy
    • Obstetrics
    • Vascular Biology

    Background:

    • The cervix undergoes significant changes during labor, requiring a robust vascular system.
    • Understanding cervical vessel structure is crucial for managing obstetric complications like hemorrhage.

    Purpose of the Study:

    • To investigate the angioarchitectonics and functional morphology of cervical blood vessels.
    • To clarify the role of these vessels in preventing hemorrhage during parturition and cervical dilatation.

    Main Methods:

    • Histotopographical analysis of cervix specimens from 30 non-pregnant women and 5 women in labor.
    • Histological and histochemical processing of tissue samples.

    Main Results:

    • Identified unique vascular patterns, including arteries surrounded by veins and "vessels within vessels."
    • Observed subendocervical arterial convolutions and smooth muscle cushions in vessels during pregnancy.
    • Described a venous network dividing cervical tissue into stromal lobules.

    Conclusions:

    • The peculiar vascular architecture of the cervix provides a structural basis for a hemostatic mechanism during labor.
    • This vascular system prevents vessel rupture, hemorrhage, and embolism during cervical dilatation.
    • The venous network facilitates stromal lobule movement, aiding cervical dilatation.

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