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...theories. Finally to give a preliminary account of our observations on the circulation of the reptile and amphibian. ...ter of the veins and arteries and the valves in the heart, the doctrine of circulation was shrouded in mystery. Galen assumed that the blood passed from the right

...efore the connection with the vessels is made, so that when it is made the circulation is at once established. Before, however, the vascularization reaches the em ...onditions are probably similar to what has been described above, the first circulation developed being associated with the yolk-sac.

...etal circulation in mammals. Two major problems present themselves: 1) the circulation of blood through the fetal heart; 2) the nature of placental exchange and t At this time there was much mystery concerning the adult circulation, and Galen further erred in assuming that the blood somehow passed through,

...n body, the renal portal, etc.) It has also been described as a sinusoidal circulation (Minot, 1900; Lewis, 1904). ...ed. The upward prolongations of the liver may be called the right and left coronary appendages. They are the anterior portions of the "Vorleber" of His, which

...rdis forms part of the ventricles. The sinus venosus connects to the fetal circulation. Septa form within the atria and ventricles to separate the left and right ...to the lungs to oxygenate the blood that subsequently reaches the systemic circulation of the newborn {{#pmid:PMC4199908|PMC4199908}}.

===The Pulmonary Circulation=== ...ssed into each lung, and were accompanied by an anomalous branch from each coronary. In Koller-Aeby's case the ductus was absent, and three large vessels, equa

* '''Quantitative effects of tobacco smoking exposure on the maternal-fetal circulation'''{{#pmid:21453488|PMID21453488}} "In pregnant women who smoke, higher arte * enters circulation though the respiratory system

...tion of development in some ancestral form where lateral inequality of the circulation had become established prior t-o the bending of the heart, but it would be ...y over which one of the main coronary veins from the ventricle reaches the coronary sinus. ' I

...dye extended in a retrograde fashion into the aorta, ductus arteriosus and coronary arteries. From their studies they concluded that the pulmonary end of the d ...ph; Barron, D. H., and Franklin, K. J. A radiographic demonstration of the circulation through the heart in the adult and in the foetus, and the identification of

...nta Development]] introduction page and [[Cardiovascular System - Coronary Circulation Development‎‎]] template page added.

...roove between the atria and the bulbo-venlricular part of the heart is the coronary sulcus/ As the bulbo- ventricular region increases in size, the duplication ...12 mm. (B is based on a reconstruction by Tandler.) X about 38. Cor. sin.. Coronary sinus: P. aid. c, dorsal endocardial cushion; For. on., foramen ovale; Int.

represented in the adult mammal, with its fully established double circulation, by the completely separated aortic and pulmonary trunks, is seen ...rsisting as the Eustachian valve, and the left sinus horn remaining as the coronary sinus, while the left duct

...vena cava is normal, but the Thebesian valve guarding the entrance of the coronary sinus is larger than normal, the opening of the sinus being larger than the ...which passes anterior to the left systemic arterial arch to forma dilated coronary sinus which enters the right auricle. The fused pulmonary veins from the ri

...es/heart7.htm Development of the Heart and Cardiovascular System- Coronary Circulation]

...layer also gives rise to blood islands which form vascular network (future coronary vessels) ...fore Birth)] | [http://embryology.med.unsw.edu.au//Movies/larsen/8-15b.mov Circulation (After Birth)] | [http://embryology.med.unsw.edu.au//Movies/larsen/kidney.m

(b) mitosis of previously formed erythroblasts in general circulation, yolk sac, and chorion of embryos from 3 to 9 mm. in length, An early stage of the developing venous circulation of Squalus acanthias is shown in figure 3 34 A. Only two veins are present,

...ta. The visceral layer of the >us portion receives arterial twigs from the coronary arteries of the rt. Branches. —These are the two coronary arteries, right and left.

...ic, artery and is at first located near the caudal end of the embryo. When circulation is established through contractions of the heart it carries blood from the ...of the vitelline veins and carried to the heart. Thus the vitelline (yolk) circulation is completed (Fig. 160). From this time on, the area vasculosa gradually en

...I alone persist. These constitute the basis on which the adult plan of the circulation is established. Consequently they should be carefully worked out in detail. ...mal ends of the left anterior and posterior cardinals, it thus becomes the coronary vein.

...establish no certain diagnosis of the diseases of the central organ of the circulation. We cannot do better and are called the coronary vessels ( vasa coronaria cordis). The coronary arteries and veins resemble each other in many respects :