. Cunningham's Text-book of anatomy. Anatomy. 874 THE VASCULAK SYSTEM. aperture. Above and anteriorly it is in relation with the ascending aorta, and from the junction of this aspect with the right lateral boundary the right auricle is prolonged anteriorly and to the left. Its right side forms the right margin of the heart, and is in relation with the right phrenic nerve and its accom- panying vessels, and with the right pleura and lung, the pericardium intervening. On the left this atrium is limited by the oblique septum which separates it from the left atrium. The sulcus terminalis is a shal
. Cunningham's Text-book of anatomy. Anatomy. 874 THE VASCULAK SYSTEM. aperture. Above and anteriorly it is in relation with the ascending aorta, and from the junction of this aspect with the right lateral boundary the right auricle is prolonged anteriorly and to the left. Its right side forms the right margin of the heart, and is in relation with the right phrenic nerve and its accom- panying vessels, and with the right pleura and lung, the pericardium intervening. On the left this atrium is limited by the oblique septum which separates it from the left atrium. The sulcus terminalis is a shallow groove on the surface of the right atrium, which passes from the front of the superior vena cava to the front of the inferior vena cava. It indicates the junction of the primitive sinus venosus with the atrium proper. The interior of the right atrium is lined with a glistening membrane, the endo- Vena cava superior Upper right /j pulmonary vein Lower right pulmonary vein .Musculi pectinati Limbus ovalis Fossa ovalis Valve of vena cava Aorta Pulmonary artery — Eight auricle Conus arteriosus Vena cava inferior. Anterior cusp of tricuspid valve Chorda; tendineae Moderator band Coronary valve Musculi papillares Fig. 753.—The Cavities of the Eight Atrium and Right Ventricle of the Heart. From a formalin fixed heart. cardium; its walls are smooth, except anteriorly and in the auricle where muscular bundles, the musculi pectinati, form a series of small vertical columns. These terminate above in a crest, the crista terminalis, which corresponds in position with the sulcus terminalis externally. At the upper and posterior part of the cavity is the opening of the superior vena cava, devoid of a valve. At the lower and posterior part is the orifice of the inferior vena cava, bounded, anteriorly, by the rudimentary valve of the vena cava ( Eustachian); and immediately anterior and to the left of this valve, between it and the atrio-ventricular orifice, is the opening of the co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
