A manual of anatomy . amentumvenosum lies inthe fissure of that name and ex-tends from the portal fissure dor-sally to the inferior vena cava. Itrepresents the impervious ductusvenosus. The blood-vessels entering theliver are the hepatic artery andthe portal vein. The latter is thereal nutrient vessel of the liver as it is laden with the nutritious sub-stances absorbed from the gastrointestinal tract and comes intovery intimate relation with the hepatic cells. The several hepatic veins drain the liver and empty the blood intothe inferior vena cava at the dorsal surface of the liver. Two ofthes
A manual of anatomy . amentumvenosum lies inthe fissure of that name and ex-tends from the portal fissure dor-sally to the inferior vena cava. Itrepresents the impervious ductusvenosus. The blood-vessels entering theliver are the hepatic artery andthe portal vein. The latter is thereal nutrient vessel of the liver as it is laden with the nutritious sub-stances absorbed from the gastrointestinal tract and comes intovery intimate relation with the hepatic cells. The several hepatic veins drain the liver and empty the blood intothe inferior vena cava at the dorsal surface of the liver. Two ofthese veins are usually of considerable size. The nerves are chiefly sympathetic from the celiac plexus; thecerebrospinal nerve assisting is the left vagus. To outline the liver upon the ventral abdominal wall four pointsare taken: (i) in the middle of the fifth interspace on the right mid-clavicular line; (3) the upper margin of the sixth left rib % inch(i cm.) medially from the midclavicular line; (2) J^ inch ( mm.). Fig. 227.—Outline of the liver uponthe ventral abdominal wall. {From aphotograph.) THE GALL-BLADDER AND DUCTS 3^3 below the tip of the tenth right rib; (4) a point midway be-between the lower end of the gladiolus sterni and the umbihcus inthe midsternal line. The line connecting (i) and (3) should bedepressed in the midsternal area representing the cardiac line connecting (i) and (2) should describe a curve to the line connecting (3) and (2) is concavoconvex, passes throughthe midsternal point (4) and is like a reversed italic /. The posi-tion of the hver varies with the movements of respiration, ascendingduring expiration and descending during inspiration. THE GALL-BLADDER AND DUCTS The gall-bladder {vesica fellea) lies in a fossa on the visceral surf aceof the right lobe of the liver. It is pear-shaped, measures about 3
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthumananatomy, bookyea
