Digestion

There argon ii types of cells in the salivary glands which send away a penny any mucose or serous secretions. salivary glands birth atomic number 18 there to create saliva. spittle is made up of 99.5 per penny water, mineral salts and an enzyme called ptyalin which starts digestion of starchy foods. Saliva keeps parts of the digestive organisation wet and assists in retentivity the food slick and so it is easier chewed and s jettyowed. It also helps found up down carbohydrates. It is controlled by the automatic system but is randy by hunger, and by the voltaic pile and smell of food. There atomic number 18 three important salivary glands: The Parotid positioned below the ears on the inside of the cheeks, makes serous secretions. The Submandibular dissimulation below the mandible and the tongue, give serous and mucose. The Sublingual uphold under the tongue, makes mucus secretions. In addition to this, it is known that umpteen small accessory glands are found in mucous membranes lining the tongue. The glands are inside a capsule of tie-up 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 duet enter the glands at the hilus and venture to the lobules.

The confirm is a muscular- bulwarked, J-shaped sack that lies below the stopover in the velocity be quadrant, located between the defile and the small intestine. The confirm 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 upper curvature. ?The Body (Corpus) is the central region. ?The Pylorus is the overturn section, which aids the emptying wait on up into the small intestine. The stomach is where food is stored, churned and mixed with stomachal juices in request to learn it down. Gastric juice contains water, mineral salts, enzymes and hydrochloric acidulous. The hydrochloric acid aids digestion and...If you privation to get a beneficial essay, order it on our website: Ordercustompaper.com

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