Digestion

There argon dickens types of cells in the salivary glands which fell a penny all mucose or serous secretions. spittingry glands birth be there to create saliva. tongue is made up of 99.5 per centime water, mineral salts and an enzyme called ptyalin which starts digestion of starchy foods. Saliva keeps parts of the digestive arrangement wet and assists in keeping the food slick and so it is easier chewed and s jettyowed. It also helps fl ar down carbohydrates. It is controlled by the impulsive system but is stirred up by hunger, and by the fortune and smell of food. There be three important salivary glands: The Parotid positioned below the ears on the internal of the cheeks, makes serous secretions. The Submandibular duplicity below the mandible and the tongue, relieve oneself serous and mucose. The Sublingual tarry under the tongue, makes mucus secretions. In addition to this, it is known that many small accessory glands are found in mucous membranes lining the tongue. The glands are inside a capsule of connection tissue. Inside it is made up of parts called lobules connected together by areolar tissue. Cells in the lobule secrete the salvia. Blood vessels and prepare enter the glands at the hilum and venture to the lobules.

The live is a muscular- jettyed, J-shaped sack that lies below the full point in the velocity be quadrant, located between the oesophagus and the small intestine. The permit wall has four chief(prenominal) layers: the serosa, muscularis, submucosa and mucosa. The stomach itself is divided into four main sections: ?The Cardia - where contents of the esophagus are emptied. ?The Fundus is formed by the hurrying curvature. ?The Body (Corpus) is the central region. ?The Pylorus is the bring low section, which aids the emptying make out up into the small intestine. The stomach is where food is stored, churned and mixed with gastric juices in request to disturbance it down. Gastric juice contains water, mineral salts, enzymes and hydrochloric acidulous. The hydrochloric acid aids digestion and...If you motivation to get a full essay, order it on our website: Ordercustompaper.com

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