结构高低级

大体解剖 > 心血管系统 > 心 > 右心室

下层结构


翻译

描述

The right ventricle is triangular in form, and extends from the right atrium to near the apex of the heart.

Its anterosuperior surface is rounded and convex, and forms the larger part of the sternocostal surface of the heart. Its under surface is flattened, rests upon the diaphragm, and forms a small part of the diaphragmatic surface of the heart. Its posterior wall is formed by the ventricular septum, which bulges into the right gventricle, so that a transverse section of the cavity presents a semilunar outline. Its upper and left angle forms a conical pouch, the conus arteriosus, from which the pulmonary artery arises. A tendinous band, which may be named the tendon of the conus arteriosus, extends upward from the right atrioventricular fibrous ring and connects the posterior surface of the conus arteriosus to the aorta.

The wall of the right ventricle is thinner than that of the left, the proportion between them being as 1 to 3; it is thickest at the base, and gradually becomes thinner toward the apex. The cavity equals in size that of the left ventricle, and is capable of containing about 85 c.c.

Its interior presents the following parts for examination:

  • Opening of pulmonary trunk
  • Right atrioventricular orifice
  • Tricuspid valve
  • Pulmonary valve
  • Trabeculae carneae
  • Chordæ tendineæ

影像

下载e-Anatomy

手机和平板用户可以在Appstore或GooglePlay下载e-Anatomy

e-Anatomy 在Appstore e-Anatomy 在Googleplay