6.1 Structure of the wall of the small intestine 0.0 / 5 ? BiologyHuman PhysiologyInternational BaccalaureateAll boards Created by: tianijayCreated on: 04-05-16 19:33 What is the outer coat of the small intestine called? Serosa 1 of 7 What kind of muscle layers does the small intestine have? Longitudinal muscle and inside it circular muscle 2 of 7 What is the sub-mucosa? A tissue layer containing blood and lymph vessels 3 of 7 What is the mucosa? The mucosa is the lining of the small intestine, with epithelium that absorbs nutrients on the inner surface 4 of 7 Describe peristalsis: The contraction of the circular and longitudinal muscles of the small intestine which mix the food with enzymes and moves it along the gut. 5 of 7 What is peristalsis controlled by? Peristalsis is controlled unconsciously by the enteric nervous system. 6 of 7 In what direction does peristalsis occur? Only away from the mouth. 7 of 7
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