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Digestive Tract Wall

Digestive Tract Walls

QuestionAnswer
What order does the layers of the digestive tract go in? (Innermost to out) 1. Mucosa (Mucous Epithelium, Lamina Propria & Muscularis Mucosae) Submucosa Muscularis Externa Subserosa Visceral Peritoneum (Serosa)
Which layer: Protects the digestive tract walls, secretes & absorbs? Mucosa
The Mucosa is made up of how many layers? Three
The first layer of the Mucosa is? Mucous Epithelium
The second layer of the Mucosa is? Lamina Propria
The third layer of the Mucosa is? Muscularis Mucosae
Which layer is: Composed of simple columnar epithelium of stratified squamous epithelium, goblet cells and endocrine cells? Mucous Epithelium
What cells secrete mucus? Goblet Cells
what cells secrete hormones into the blood? Endocrine Cells
Which layer is: Composed of areolar connective tissue, blood vessels & lymphatic vessels. Provide nutrients to the Mucous Epithelium layer, distribute hormones & absorb end products of digestion from the lumen? Lamina Propria
Which layer is? Made up of longitudinal & circular layers of muscle responsible for generating local movement? Muscularis Mucosae
Which layer: Consists of areolar connective tissue containing blood vessels, lymphatic vessels and nerve fibers? Submucosa
Which layer: Consists of smooth muscle & associated nerve fibers. The smooth muscle is responsible for movement of food by peristalsis and mechanical digestion by segmentation. Muscularis Externa
Which layer is: A layer of loose areolar tissue underlying the serous coat of the intestines? Subserosa
Which layer is a: Membrane that covers the Muscularis Externa, stomach, larger intestines & small intestines. The mesentery (attaches the large intestines to the rear of the abdominal wall) is an extension of this layer. Visceral Peritoneum or Serosa
Created by: xocheronnieox