trabecular artery

The pulp of the spleen is practically all splenic tissue from one trabecular artery to another.

The trabecular arteries are the name of the branches of the splenic artery after it passes into the trabeculae of the spleen, where it branches.

Parasympathetic branches extend from the sacral plexus into the arteries supplying the erectile tissue; upon stimulation, these nerve branches release acetylcholine, which, in turn causes release of nitric oxide from endothelial cells in the trabecular arteries.