The anatomist's vade mecum : a system of human anatomy . ; there is a communication between thetwo auricles by means of the foramen ovale. 2ndly, In the arterialsystem; there is a communication between the pulmonary artery anddescending aorta, by means of a large trunk, the ductus , Also in the arterial system: the internal iliac arteries, underthe name of hypogastric and umbilical, are continued from the foetusto the placenta, to which they return the blood which has circulatedin the system of the fcetus. 4thly, In the venous system; there is acommunication between the umbilic
The anatomist's vade mecum : a system of human anatomy . ; there is a communication between thetwo auricles by means of the foramen ovale. 2ndly, In the arterialsystem; there is a communication between the pulmonary artery anddescending aorta, by means of a large trunk, the ductus , Also in the arterial system: the internal iliac arteries, underthe name of hypogastric and umbilical, are continued from the foetusto the placenta, to which they return the blood which has circulatedin the system of the fcetus. 4thly, In the venous system; there is acommunication between the umbilical vein and the inferior vena cava,called the ductus venosus. pcetal circulation. The pure blood is brought from the placenta by the umbilical umbilical vein passes through the umbilicus, and enters the liver,where it divides into several branches, which may be arranged underthree heads:—Istly, Two or three, which are distributed to the leftlobe. 2ndly, A single branch, which communicates with the portal 630 F(ETAL CIRCULATION. Fig. 204* o o. t^ u * The foetal circulation. 1. The umbilical cord, consisting of the umbilicalvein and two umbilical arteries; proceeding from the placenta (2.) 3. Theumbilical vein dividing into three branches ; two (4, 4), to be distributed tothe liver; and one (5), the ductus venosus, which enters the inferior venacava (6). 7, The poi-tal vein, returning the blood from the intestines, anduniting with the right hepatic branch. 8. The right auricle; the course ofthe blood is denoted by the arrow, proceeding from 8, to 9, the left The left ventricle ; the blood following the arrow to the arch of the aorta(11), to be distributed through the branches given off by the arch to the headand upper extremities. The arrows 12 and 13, represent the return of theblood from the head and upper extremities through the jugular and subcla-vian veins, to the superior vena cava (14), to the right auricle (8), and in the rCETAL CIRCULATION. 631 vei
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
