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 April 2024 : Editorial
Editorial: Forty Years of Waiting for Prevention and Cure of HIV Infection – Ongoing Challenges and Hopes for Vaccine Development and Overcoming Antiretroviral Drug ResistanceDOI: 10.12659/MSM.944600
Med Sci Monit 2024; 30:e944600
In Press
15 Apr 2024 : Laboratory Research
The Role of Copper-Induced M2 Macrophage Polarization in Protecting Cartilage Matrix in OsteoarthritisMed Sci Monit In Press; DOI: 10.12659/MSM.943738
07 Mar 2024 : Clinical Research
Knowledge of and Attitudes Toward Clinical Trials: A Questionnaire-Based Study of 179 Male Third- and Fourt...Med Sci Monit In Press; DOI: 10.12659/MSM.943468
08 Mar 2024 : Animal Research
Modification of Experimental Model of Necrotizing Enterocolitis (NEC) in Rat Pups by Single Exposure to Hyp...Med Sci Monit In Press; DOI: 10.12659/MSM.943443
18 Apr 2024 : Clinical Research
Comparative Analysis of Open and Closed Sphincterotomy for the Treatment of Chronic Anal Fissure: Safety an...Med Sci Monit In Press; DOI: 10.12659/MSM.944127
Most Viewed Current Articles
17 Jan 2024 : Review article
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
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
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
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952