. Anatomy, descriptive and surgical. ^, or sinus ve7iosus, and an appendixauricula?. The sinus is the large quadrangular cavity placed between the two venae cavae;its walls are extremely thin; it is connected below with the right ventricle, andinternally with the left auricle, being free in the rest of its extent. The appendix auricula?, so called from its fancied resemblance to a dogs ear, isa small conical muscular pouch, the margins of which present a dentated edge. Itprojects from the sinus forward and to the left side, overlapping the root of Bristle passed throRight AuTicula^V
. Anatomy, descriptive and surgical. ^, or sinus ve7iosus, and an appendixauricula?. The sinus is the large quadrangular cavity placed between the two venae cavae;its walls are extremely thin; it is connected below with the right ventricle, andinternally with the left auricle, being free in the rest of its extent. The appendix auricula?, so called from its fancied resemblance to a dogs ear, isa small conical muscular pouch, the margins of which present a dentated edge. Itprojects from the sinus forward and to the left side, overlapping the root of Bristle passed throRight AuTicula^Ventriculfir The Right Auricle and Ventricle laid open, the anteriorwalls of both being removed. To examine the interior of the auricle, an incision should be made along its right border fromthe entrance of the superior vena cava to that of the inferior. A second cut is to be made fromthe centre of this first incision to the tip of the auricular appendix, and the flaps raised. The internal surface of the right auricle is smooth, except in the auricle andadjacent part of the anterior wall of the sinus venosus, where it is thrown intoparallel ridges. THE THORAX. It represents the following parts for examination: r Superior vena cava. tt 7 / Eustachian. Inferior vena cava. \ Coronary. { Coronary sinus Mugculi tinatL Tuberculurn Loweri. Foramina Thebesii. ^ Auriculo-ventricular. n t /. F , , ^ j. f Annulus of Jbcetal structure. < -& r J \ rossa ovalis. The superior vena cava returns the blood from the upper half of the body, andopens
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
