Identify the anatomical feature of the frontal section of the heart labeled D. pectinate muscles cusp of the bicuspid valve trabeculae carneae cusp of the tricuspid valve Identity the pituitary normone iabeied I ADH LSH LH OXT Identify the highlighted sheep heart structure (frontal section). left atrium right atrium left ventricle right ventricle B cells mature in the and T cells mature in the red bone marrow; thymus thyroid; appendix thymus; red bone marrow appendix; thyoid.