Digestion

There atomic number 18 two types of cells in the salivary glands which eliminate a penny either mucose or serous secretions. spittingry glands birth be there to create saliva. tongue is made up of 99.5 per cent water, mineral salts and an enzyme called ptyalin which starts digestion of starchy foods. Saliva keeps parts of the digestive system wet and assists in retentiveness the food slick and so it is easier chewed and s jettyowed. It also helps keep back out down carbohydrates. It is controlled by the involuntary system but is moved(p) by hunger, and by the muckle and smell of food. There are three important salivary glands: The Parotid positioned below the ears on the internal of the cheeks, makes serous secretions. The Submandibular lying below the mandible and the tongue, give serous and mucous. The Sublingual remain under the tongue, makes mucus secretions. In addition to this, it is known that umteen small accessory glands are found in mucous memb ranes lining the tongue. The glands are inside a capsule of association tissue. Inside it is made up of parts called lobules connected unneurotic by areolar tissue. Cells in the lobule secrete the salvia. Blood vessels and brace enter the glands at the hilum and venture to the lobules.

The yield is a muscular-walled, J-shaped sack that lies below the stop consonant in the velocity remaining quadrant, located between the esophagus and the small intestine. The stand up wall has four main layers: the serosa, muscularis, submucosa and mucosa. The stomach itself is divided into four main sections: ?The Ca rdia - where contents of the esophagus are e! mptied. ?The Fundus is formed by the upper curvature. ?The Body (Corpus) is the central region. ?The Pylorus is the start out section, which aids the emptying serve up into the small intestine. The stomach is where food is stored, churned and mixed with gastric juices in request to bankrupt it down. Gastric juice contains water, mineral salts, enzymes and hydrochloric acidulous. The hydrochloric acid aids digestion and...If you trust to get a full essay, order it on our website: OrderCustomPaper.com

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