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Atlas of Human Embryos Chapter   Figure

T-6 spinal ganglion, afferent vein (portal), allantois, anterior vagal trunk, aorta, appendix, central canal, diaphragm, dorsal funiculus, dorsal horn, ductus venosus, efferent vein, esophageal fibrosa, external abdominal oblique aponeurosis, head of rib 7, hepatic veins, inferior vena cava, junction of abdominal wall and umbilical cord, lateral funiculus, lateral horn, liver, lower lobe of left lung, lower lobe of right lung, mucoid connective tissue, oblique fissure, pleural cavity, posterior vagal trunk, rectus abdominis muscle, rib 10 (costal cartilage), rib 6, rib 7, rib 8, superior mesenteric artery, superior mesenteric vein, sympathetic trunk, trapezius muscle, umbilical vein, upper lobe of right lung, ventral funiculus, ventral horn, vertebral column, vitelline (omphalomesenteric) vein

A section through the junction of the umbilical cord and the body wall and the T-6 spinal ganglion.

Observe:
1. The near junction of the umbilical vein with the ductus venosus.
2. An afferent vein of the liver arising from the ductus venosus, and efferent veins draining into the hepatic veins that, in turn, drain into the inferior vena cava.
3. The reorganization of the esophageal plexus into anterior and posterior vagal trunks.
4. The esophagus passing to the left, ventral to the aorta.
5. The relation of the sympathetic trunk to the vertebral column and head of the ribs.


Keywords: T-6 spinal ganglion, afferent vein (portal), allantois, anterior vagal trunk, aorta, appendix, central canal, diaphragm, dorsal funiculus, dorsal horn, ductus venosus, efferent vein, esophageal fibrosa, external abdominal oblique aponeurosis, head of rib 7, hepatic veins, inferior vena cava, junction of abdominal wall and umbilical cord, lateral funiculus, lateral horn, liver, lower lobe of left lung, lower lobe of right lung, mucoid connective tissue, oblique fissure, pleural cavity, posterior vagal trunk, rectus abdominis muscle, rib 10 (costal cartilage), rib 6, rib 7, rib 8, superior mesenteric artery, superior mesenteric vein, sympathetic trunk, trapezius muscle, umbilical vein, upper lobe of right lung, ventral funiculus, ventral horn, vertebral column, vitelline (omphalomesenteric) vein

Source: Atlas of Human Embryos.