File:Embryological development of the human venous system.png
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| Description | Figure 1. Embryological development of the human venous system. (A): The embryo demonstrates the development of paired sets of ‘vitelline’ and ‘umbilical’ veins in its fifth week, which initially drain the yolk sac and allantois. (B): At 4 weeks there are three symmetric paired veins: the umbilical veins, vitelline veins and cardinal veins. All three systems converge into the sinus venosus. (C): Liver cords develop into the septum transversum and interrupt the cranial portion of the umbilical and vitelline veins. (D): this is an asymmetric stage with the intrahepatic anastomosis between umbilico–portal and –ductus venosus systems. (E): Changes in the VVs and changes in the UVs continue. Only the most caudal and the most cranial segments of this portion of the VVs will persist. (F): Small venous branches, named venæ advehentes, convey the blood from the subhepatic anastomosis to the sinusoidal plexus; small venous vessels named venæ revehentes, drain the blood of the sinusoidal plexus into the subdiaphragmatic anastomosis. SV: sinus venosus, VV: vitelline veins, PL: primordial liver, UV: umbilical veins, PCV: posterior cardinal veins, ACV: anterior cardinal veins, RUV: right umbilical vein, LUV: left umbilical vein, RVV: right vitelline vein, LVV: left vitelline vein, ARCV: anterior right cardinal vein, ALCV: anterior left cardinal vein, DU: duodenum, PS: portal sinus, IDA: intermediate dorsal anastomosis, CVA: caudal ventral anastomosis, PRCV: posterior right cardinal vein; PLCV: posterior left cardinal vein; RHCC: right hepatic common cardinal vein; IVChcs: inferior vena cava hepatocardiac segment; RPV: right portal vein; LPV: right portal vein; UV: umbilical vein; MPV: main portal vein; LP: liver parenchyma; IVC: inferior vena cava; PV: portal vein; MV: mesenteric vein; RA: ramus angularis; RTHV: right terminal hepatic vein; MTHV: median terminal hepatic vein; LTHV: median terminal hepatic vein; HCV: hepatic cardialis venula; OPVR: obliterated portion of venous rings; BD: bile duct; P: pancreas; VA: venae advehentes; VR: venae revehentes; ADPUV: anterior detached portions of umbilical vein. Images from the collection of Dr Anca-Maria Istrate-Ofiţeru. |
| Date | |
| Source | Feasibility of Fetal Portal Venous System Ultrasound Assessment at the FT Anomaly Scan. Diagnostics 2022, 12, 361. https://doi.org/10.3390/diagnostics12020361 |
| Author | Nagy, R.D.; Ruican, D.; Zorilă, G.-L.; Istrate-Ofiţeru, A.-M.; Badiu, A.M.; Iliescu, D.G. |
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| current | 11:20, 15 February 2024 | | 2,980 × 1,672 (1.37 MB) | Rasbak (talk | contribs) | {{Information |description= Figure 1. Embryological development of the human venous system. (A): The embryo demonstrates the development of paired sets of ‘vitelline’ and ‘umbilical’ veins in its fifth week, which initially drain the yolk sac and allantois. (B): At 4 weeks there are three symmetric paired veins: the umbilical veins, vitelline veins and cardinal veins. All three systems converge into the sinus venosus. (C): Liver cords develop into the septum transversum and interrupt the cran... |
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