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  2. Submucosa - Wikipedia

    en.wikipedia.org/wiki/Submucosa

    The submucosa (or tela submucosa) is a thin layer of tissue in various organs of the gastrointestinal, respiratory, and genitourinary tracts. It is the layer of dense irregular connective tissue that supports the mucosa (mucous membrane) and joins it to the muscular layer, the bulk of overlying smooth muscle (fibers running circularly within layer of longitudinal muscle).

  3. Brunner's glands - Wikipedia

    en.wikipedia.org/wiki/Brunner's_glands

    Duodenal glands are situated within the mucosa and submucosa of the duodenum. They are most abundant near the pylorus, growing shorter and more sparse distally towards the terminal portion of the duodenum. [1] The duodenum can be distinguished from the jejunum and ileum by the presence of Brunner's glands in the submucosa. [citation needed]

  4. Submucosal glands - Wikipedia

    en.wikipedia.org/wiki/Submucosal_glands

    The submucosa is the tissue that connects the mucosa to the muscle outside the tube. The glands themselves are quite complex. The mucus factory is at the bottom, in the submucosa, it is composed of many little sacs (acini) where the mucus originates. Each sac (acinus) has one end that can open and close (dilate) to allow the mucus out.

  5. Anatomical terms of microanatomy - Wikipedia

    en.wikipedia.org/wiki/Anatomical_terms_of...

    The submucosa consists of a dense and irregular layer of connective tissue with blood vessels, lymphatics, and nerves branching into the mucosa and muscular layer. It contains the submucous plexus, and enteric nervous plexus, situated on the inner surface of the muscular layer.

  6. Duodenum - Wikipedia

    en.wikipedia.org/wiki/Duodenum

    Like other structures of the gastrointestinal tract, the duodenum has a mucosa, submucosa, muscularis externa, and adventitia. Glands line the duodenum, known as Brunner's glands, which secrete mucus and bicarbonate in order to neutralise stomach acids. These are distinct glands not found in the ileum or jejunum, the other parts of the small ...

  7. Submucosal plexus - Wikipedia

    en.wikipedia.org/wiki/Submucosal_plexus

    The submucosal plexus (Meissner's plexus, plexus of the submucosa, plexus submucosus) lies in the submucosa of the intestinal wall. The nerves of this plexus are derived from the myenteric plexus which itself is derived from the plexuses of parasympathetic nerves around the superior mesenteric artery. Branches from the myenteric plexus ...

  8. Zenker's diverticulum - Wikipedia

    en.wikipedia.org/wiki/Zenker's_diverticulum

    While it may be asymptomatic, Zenker diverticulum can present with the following symptoms: Dysphagia (difficulty swallowing), and sense of a lump in the throat; Food might get trapped in the outpouching, leading to: Regurgitation, reappearance of ingested food in the mouth; Cough, due to food regurgitated into the airway

  9. Trachea - Wikipedia

    en.wikipedia.org/wiki/Trachea

    Directly beneath this mucus layer lies the submucosa layer which is composed primarily of fibrous connective tissue and connects the mucosa to the rings of hyaline cartilage beneath. [9] The trachea is surrounded by 16 to 20 rings of hyaline cartilage; these 'rings' are incomplete and C-shaped. [2]