Trabecular Artery and Vein in the Spleen of a Dog

The trabeculae in the spleen contain smooth muscle cells and connective tissue. The trabecular artery has its own muscular wall (pink) surrounded by connective tissue (stained blue here). The trabecular vein has a thin wall made up of endithelium only. The fibromuscular trabecular tissue gives support to the vessel. This slide is more suitable for the study of the trabecular vessels than for the red and white pulps. Original mag. 25x. Mason’s trichrome. Trabecular artery and vein. Spleen. Lymphoid System. Dog.