. Cunningham's Text-book of anatomy. Anatomy. 872 THE VASCULAR SYSTEM. The base is limited below by the inferior part of the coronary sulcus, in which the coronary sinus lies; its upper border is in relation with the pulmonary arteries. A fold of pericardium, the vestigial fold, descends, near the left border of the base, from the left branch of the pulmonary artery above to the left superior pulmonary vein below. It contains the ligamentum v. cavse sinistra?, and from its lower end a small vein, the oblique vein of the left atrium, passes below the orifice of the lower left pulmonary vein, an
. Cunningham's Text-book of anatomy. Anatomy. 872 THE VASCULAR SYSTEM. The base is limited below by the inferior part of the coronary sulcus, in which the coronary sinus lies; its upper border is in relation with the pulmonary arteries. A fold of pericardium, the vestigial fold, descends, near the left border of the base, from the left branch of the pulmonary artery above to the left superior pulmonary vein below. It contains the ligamentum v. cavse sinistra?, and from its lower end a small vein, the oblique vein of the left atrium, passes below the orifice of the lower left pulmonary vein, and descends to the coronary sinus. Further, it is from the base that the visceral layer of the pericardium, which elsewhere completely invests the heart, is reflected, the lines of reflection cor- responding with the orifices of the great Left atrium Pulmonary artery Superior vena cava Right coronary- artery Right auricle Right coronary auricle Circumflex branch of left coronary artery Interventricular branch of left oronary artery. Left ventricle Fig. 751.—The Sternocostal Surface of Formalin Fixed Heart. The apex, bluntly rounded, is formed entirely by the left ventricle. It is directed downwards, anteriorly, and to the left, and is situated, under cover of the anterior borders of the left lung and pleura, behind the fifth left intercostal space, three and a half inches from the anterior median line. The diaphragmatic surface is formed by the ventricular part of the heart. It rests upon the diaphragm, chiefly on the central tendon, but, upon the left side, on a small portion of the muscular substance also, and it is divided into two areas —a smaller to the right side and a larger to the left side—by an oblique antero- posterior groove, the inferior interventricular sulcus. It is separated from the base by the posterior or inferior portion of the coronary sulcus. The sterno-costal surface is directed upwards, anteriorly, and to the left. It lies posterior to the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
