The suspensory muscle of the duodenum.

The suspensory muscle of the duodenum continues the muscular layers of the duodenum, which is consequently surrounded on its mesenteric border only by the muscularis mucosae. Between the muscle bundles of the suspensor there is much loose connective and adipose tissue. Microganglions of no more than 90 cells may be found between the muscle bundles of the suspensor. In their superior part, the muscle bundles have connective sheaths, which are continuous with the adventitia of the aorta and celiac trunk. It is most probable that the suspensor acts like a sphincter and is innervated contrarily to the duodenum.