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Saliva (commonly referred to as spit or drool) is an extracellular fluid produced and secreted by salivary glands in the mouth. In humans , saliva is around 99% water , plus electrolytes , mucus , white blood cells , epithelial cells (from which DNA can be extracted), enzymes (such as lipase and amylase ), and antimicrobial agents (such as ...
Composition of Saliva: It consists of three main components – Water: 99.5%; Organic Substances; Inorganic Substance; Organic Substances: Proteins: Alpha Amylase, Maltase, Lingual Lipase, Immunoglobulin, Agglutinin, Other polypeptides – Proline rich protein, Slatherins, Cystatins, Histatins
saliva, a thick, colourless, opalescent fluid that is constantly present in the mouth of humans and other vertebrates. It is composed of water, mucus, proteins, mineral salts, and amylase. As saliva circulates in the mouth cavity it picks up food debris, bacterial cells, and white blood cells.
Saliva. Saliva (spit) is a bodily fluid that has several important functions. For example, it kickstarts digestion, helps you chew and swallow food, and protects your teeth. Saliva is mainly water, but it also has several proteins and other substances that help keep your mouth and body healthy.
Saliva is composed of a variety of electrolytes, including sodium, potassium, calcium, magnesium, bicarbonate, and phosphates. Also found in saliva are immunoglobulins, proteins, enzymes, mucins, and nitrogenous products, such as urea and ammonia.
The salivary glands are exocrine glands which produce a digestive fluid called saliva. They are accessory organs of the digestive system and are positioned in the head, in and around the oral cavity and secrete their salivary contents into the mouth.
components and functions n Beginning in 1950’s whole saliva evaluated (antimicrobial properties, role in microbial attachment, mineralization, taste, lubrication) n Secretions of major glands (parotid and submadibular /sublingual) n In 1970’s individual components isolated and biochemically characterized
The salivary submandibular, parotid, sublingual, and submucosal glands produce saliva which is necessary for the moistening of food products, breakdown of carbohydrates by salivary amylase (formerly known as ptyalin), antimicrobial, and other protective mechanisms.
These components interact in related functions in the following general area: (1) bicarbonates, phosphates, and urea act to modulate pH and the buffering capacity of saliva; (2) macromolecule proteins and mucins serve to cleanse, aggregate, and/or attach oral microorganisms and contribute to dental plaque metabolism; (3) calcium, phosphate, and ...
Besides the many minute glands that secrete saliva, there are three major pairs of salivary glands: the parotid, the submandibular, and the sublingual glands. The parotid glands, the largest of the pairs, are located at the side of the face, below and in front of each ear.