Mucous membrane
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| Mucous membrane | |
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| LAYERS: serosa longitudinal muscle myenteric plexus circular muscle submucosal plexus submucosal mucosal | |
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| Section of the human esophagus. Moderately magnified. The section is transverse and from near the middle of the gullet. a. Fibrous covering. b. Divided fibers of longitudinal muscular coat. c. Transverse muscular fibers. d. Submucous or areolar layer. e. Muscularis mucosae. f. Mucous membrane, with vessels and part of a lymphoid nodule. g. Stratified epithelial lining. h. Mucous gland. i. Gland duct. m’. Striated muscular fibers cut across. | |
| Latin | tunica mucosa |
| Gray's | subject #242 1110 |
| Dorlands/Elsevier | t_22/12831913 |
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The mucous membranes (or mucosae; singular: mucosa) are linings of mostly endodermal origin, covered in epithelium, which are involved in absorption and secretion. They line various body cavities that are exposed to the external environment and internal organs. It is at several places continuous with skin: at the nostrils, the lips, the ears, the genital area, and the anus. The sticky, thick fluid secreted by the mucous membranes and gland is termed mucus. The term mucous membrane refers to where they are found in the body and not every mucous membrane secretes mucus.
Body cavities featuring mucous membrane include most of the respiratory system. The glans penis (head of the penis) and glans clitoridis and the inside of the prepuce (foreskin) and clitoral hood are mucous membranes, not skin.
Components
- Epithelium
- Lamina propria
- Smooth muscle/Muscularis mucosa/ (GI tract)
Types of mucosa (incomplete)
- Buccal mucosa
- Gastric mucosa
- Intestinal mucosa
- Olfactory mucosa
- Oral mucosa
- bronchial mucosa
- Uterine mucosa
- Endometrium is the mucosa of the uterus
Additional images
 Wall of the ureter. |
 Section of mucous membrane of human stomach, near the cardiac orifice. |
 General structure of the gut wall showing the Mucosa. |
See also
External links
- mucosa at eMedicine Dictionary
- Organology at UC Davis Digestive/mammal/system1/system4 - "Mammal, whole system (LM, Low)"
- MeSH Mucous+Membrane
tissue layers |
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| mesothelium, serosa/adventitia, muscularis externa (outer & inner), submucosa, mucosa (muscularis mucosa, lamina propria, epithelium), lumen |
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Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
