03 November 1997
Venous segments of human placenta
Piotr OszukowskiMed Sci Monit 1997; 3(6): BR784-788 :: ID: 501745
Abstract
The blood of the fetus is supplied to the placenta usually by two umbilical arteries; it returns to the fetus through one umbilical vein which is formed on the placental chorionic plate from several tributaries and runs in the umbilical cord accompanied by the two arteries. This study is an attempt to determine whether particular tributaries of the umbilical vein anastomose within the placentaproximal to the formation of the umbilical vein. The study has been carried out by the corrosion method on human placentas coming from normal full-term pregnancies. To arteries - chemohardenable Plastogen G stained in red was injected, whereas to each tributary of the umbilical vein - Plastogen G stained in other colours (blue, green, yellow, brown) was injected in order to differentiate between the areas of drainage by particular tributaries of the umbilical vein. It was established that filling each of the tributaries of the umbilical vein with a different colour of Plastogen G yields a division of the placenta into 'venous segments', undescribed so far, varying in number from 2 to 5. No anastomoses between the veins of particular 'segments' have been found. Furthermore, it is shown that 'venous segments' do not overlap with 'arterial segments'.
Keywords: human placenta, placental veins, Anatomy, corrosion casts
Editorial
01 December 2024 : Editorial
Editorial: The 2024 Revision of the Declaration of Helsinki and its Continued Role as a Code of Ethics to Guide Medical ResearchDOI: 10.12659/MSM.947428
Med Sci Monit 2024; 30:e947428
In Press
Clinical Research
Cost Reduction in Blood Transfusions After Implementation of Decision Protocol Based on Hemoglobin and Anem...Med Sci Monit In Press; DOI: 10.12659/MSM.945854
Clinical Research
Impact of Comprehensive Preoperative Assessments on Gynecological Ambulatory Surgery Outcomes in a Chinese ...Med Sci Monit In Press; DOI: 10.12659/MSM.945771
Animal Research
Histological Evaluation of the Effects of Intra-Articular Injection of Caffeic Acid on Cartilage Repair in ...Med Sci Monit In Press; DOI: 10.12659/MSM.946845
Clinical Research
Impact of Clear Aligners vs Conventional Brackets on Oxidant and Antioxidant Levels: A Case-Control StudyMed Sci Monit In Press; DOI: 10.12659/MSM.946419
Most Viewed Current Articles
17 Jan 2024 : Review article 6,956,331
Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron VariantDOI :10.12659/MSM.942799
Med Sci Monit 2024; 30:e942799
14 Dec 2022 : Clinical Research 1,951,447
Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase LevelsDOI :10.12659/MSM.937990
Med Sci Monit 2022; 28:e937990
16 May 2023 : Clinical Research 696,757
Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...DOI :10.12659/MSM.940387
Med Sci Monit 2023; 29:e940387
07 Jan 2022 : Meta-Analysis 262,783
Efficacy and Safety of Light Therapy as a Home Treatment for Motor and Non-Motor Symptoms of Parkinson Dise...DOI :10.12659/MSM.935074
Med Sci Monit 2022; 28:e935074