Left ventricle - Ventriculus sinister
The left ventricle is longer and more conical in shape than the right, and on transverse section its concavity presents an oval or nearly circular outline. It forms a small part of the sternocostal surface and a considerable part of the diaphragmatic surface of the heart; it also forms the apex of the heart. Its walls are about three times as thick as those of the right ventricle.
Its interior presents the following parts for examination:
- Openings : Left atrioventricular orifice and aortic orifice
- Valves : mitral valve and aortic valve
- Trabeculae carneae and Chordæ tendineæ
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).