The motility of the gastrointestinal tract is controlled primarily by the muscularis mucosae.

Question

Quizplus · Accepted Answer

The motility of the gastrointestinal tract is primarily controlled by the muscularis externa, which consists of layers of smooth muscle that contract rhythmically to move food along the digestive tract. The muscularis mucosae is a much thinner layer of muscle that alters the surface area for absorption and secretion but does not play a primary role in overall gastrointestinal motility.

The Motility of the Gastrointestinal Tract Is Controlled Primarily by the Muscularis