Muscle layers of the jejunum (100X) Muscle layers of the jejunum. Image copyright: University of Oslo, CC BY-NC-ND 4.0. (Tissue stain: H+E). Magnify Labels Up Try to identify: the submucosa both the longitudinal and circular layers of smooth muscle nervous tissue (part of the plexus myentericus) Published November 12th 2021, updated November 14th 2021. Share on Facebook Tweet Send email Jejunum Jejunum