2020-07-01
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Secretions of the Large Intestine
Component of the colon has pH 8.5-9.0, the dense part of which consists of mucous lumps in which enzymes from the small intestine are found, the regulation of secretion is mainly carried out by local mechanisms.
In addition, stimulation of the pelvic nerve (parasympathetic) causes an increase in secretion.
Component of the large intestine contains microflora, anaerobic bacteria predominate (90%), the remaining 10% are lactic acid bacteria and Escherichia coli; functions of microflora are as follows: synthesis of vitamins K, group B; production of BAS; Fiber splitting (up to 40%);
Сleavage of residues of nutrients, fermentation of carbohydrates to lactic and acetic acids, such an environment prevents decay.
Also, the microflora is important in immunity: it does not allow to reproduce pathogenic microbes, promotes the production of antibodies.
