The anatomist's vade mecum : a system of human anatomy . right ventricle; one larger than the rest runs along theright border of the heart and joins the trunk formed by these veins,which curves around the right amiculo-ventricular groove, to termi-nate in the great cardiac vein near its entrance into the rightauricle; others cross the groove, and open directly into the auricle. The VencB Thehesii are numerous minute venules wliich convey thevenous blood directly from the substance of the heart into its foiu-cavities. Their existence is denied by some anatomists. 381 PORTAL SYSTEM. The portal s
The anatomist's vade mecum : a system of human anatomy . right ventricle; one larger than the rest runs along theright border of the heart and joins the trunk formed by these veins,which curves around the right amiculo-ventricular groove, to termi-nate in the great cardiac vein near its entrance into the rightauricle; others cross the groove, and open directly into the auricle. The VencB Thehesii are numerous minute venules wliich convey thevenous blood directly from the substance of the heart into its foiu-cavities. Their existence is denied by some anatomists. 381 PORTAL SYSTEM. The portal system is composed of fom- large veins which retm-n theblood from the chylopoietic viscera; they are the— Inferior mesenteric vein, Splenic vein, Superior mesenteric vein, Gastric veins. The Inferior mesenteric vein receives its blood from the rectum by means of the hsemorrhoidal veins, and from the sigmoid flexure and descending colon, and ascends behind the transverse duodenum and pancreas, to terminate in the splenic vein. Its hemorrhoidal branches. * The portal vein. 1. The inferior mesenteric vein; it is traced by meansof dotted lines behind the pancreas (2) to terminate in the splenic vein (3).4. The spleen. 5. Gastric veins, opening into the splenic vein. 6. Thesuperior mesenteric vein. 7. The descending portion of the Its transverse portion, which is crossed by the superior mesenteric veinand by a part of the trunk of the superior mesenteric artery. 9. The portalvein. 10. The hepatic artery. 11. The ductus communis choledochus. 12. The division of the duct and vessels at the transverse fissure of the liver. 13. The cystic duct leading to the gall bladder. aaSi PULMONAKT VEINS. inosculate with brandies of the internal iliac vein, and thus establisha communication between the portal and general venous system. The Superior mesenteric vein is formed by branches which coUectthe venous blood from the capillaries of the superior mesenteric artery;they constitute b
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