Mucus gastrointestinal tract

Tannic acid causes centralobular liver necrosis following absorption from gastrointestinal tract, mucus membranes, or from denuded skin surfaces. Liver metabolism of tannic acid requires methyl-group donors. Therefore, methyl-group donors can be depleted following excessive tannic acid absorption. 

DIARRHEA Diarrhea may be an indication of a super-infection of the gastrointestinal tract or pseudomembranous colitis. The nurse inspects all stools and notifies the primary health care provider if diarrhea occurs because it may be necessary to stop the drug. If diarrhea does occur and there appears to be blood and mucus in the stool, it is important to save a sample of the stool and test for occult blood using a test such as Hemoccult. If the stool tests positive for blood, the nurse saves the sample for possible further laboratory analysis. 

Ulcer formation is the net result of a lack of homeostasis between factors within the gastrointestinal tract responsible for the breakdown of food (e.g., gastric acid and pepsin) and factors that promote epithelial defense and repair (e.g., bicarbonate, mucus secretion, and prostaglandins). 

Said et al. [78] directly measured the acid microclimate on the surface of gastrointestinal tract (GIT) epithelial cells (intact with mucus layer) in rats. The pH on the apical (donor) side of the cells varied from 6.0 to 8.0, while the pH on the basolateral (acceptor) side was 7.4. Furthermore, the pH gradient between... 

Allen, A., Bell, A., and MacQueen, S. (1984). Mucus and mucosal protection. In "Mechanisms of Mucosal Protection in the Upper Gastrointestinal Tract" (A. Allen, G. Flemstrom, A. Garner, W. Silen, and L. A. Turnberg, eds), pp. 195-201. Raven Press, New York. 

Neutra, M. R., and Forstner, J. F. (1987). Gastrointestinal mucus Synthesis, secretion, and function. In Physiology of the Gastrointestinal Tract" (L. R. Johnson, ed.). Raven Press, New York. 

Rubinstein, A., and Tirosh, B., Mucus gel thickness and turnover in the gastrointestinal tract of the rat response to cholinergic stimulus and implication for mucoadhesion, Pharm. Res., 11 794-799 (1994). 

Figure 4.2 Substructure of the wall in the gastrointestinal tract. (Not to scale). Epithelial cells of the villi possess micro villi which extend into the lumen (Not shown). The epithelium consists of absorptive enterocytes, endocrine cells that secrete peptide and goblet cells that secrete mucus.

Inspired air, which is humidified and warmed in the nose, moves rapidly from the nasal cavity to the nasopharynx and into the trachea. Most airborne particles that are inspired are entrapped in the mucus layer of the respiratory region. Subsequently, these particles are removed from the nasal cavity to the nasopharynx and esophagus and eliminated via the gastrointestinal tract through a process known as mucociliary clearance. 

A layer of mucus coven the gastrointestinal tract and protects the underlying cell membrane iron the corrosive dements in the luminal content It is a pert of the... 

Mucus in the respiratory and gastrointestinal tract traps many microorganisms. 

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