http://upload.wikimedia.org/wikipedia/commons/2/20/Diagram_of_the_human_heart_%28cropped%29.svg

Thick-walled muscular chamber constituting the left border and apex of the heart. It receives oxygenated blood from the left atrium through the mitral orifice and send it off into the aorta. [Dorian_AF, Elsevier's_encyclopaedic_dictionary_of_medicine, Part_B:_Anatomy_(1988)_Amsterdam_etc.:_Elsevier][VHOG]

uberon

ventriculus sinister cordis

The vertebrate heart initially forms as a tube from a population of precursor cells termed the first heart field (FHF). Cells from the adjacent second heart field (SHF) are then progressively added to the developing heart. In avian and mammalian hearts, the FHF contributes mainly to the left ventricle, whereas the SHF gives rise to the outflow tract and large portions of the right ventricle and atria. Both fields arise from common mesodermal progenitors, although the detailed lineage relationships between FHF and SHF remain uncertain.[well established][VHOG]

UBERON:0002084

https://github.com/obophenotype/uberon/wiki/Modeling-paired-structures-Design-Pattern

In mammals continuous with aorta

• cavity of left ventricle

• interventricular septum
• atrioventricular septum

• anterior wall of left ventricle

• cavity of left ventricle
• cardiac muscle of left ventricle
• outflow part of left ventricle
• endocardium of left ventricle
• wall of left ventricle
• left ventricle myocardium
• adipocyte of epicardial fat of left ventricle