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Saliva on a baby's lips. 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 secretory IgA, and lysozymes).
Hypersalivation can contribute to drooling if there is an inability to keep the mouth closed or difficulty in swallowing (dysphagia) the excess saliva, which can lead to excessive spitting. Hypersalivation also often precedes emesis (vomiting), where it accompanies nausea (a feeling of needing to vomit).
The origins of the spitting myth have been the topic of much scholarly investigation and public debate over the years. There are three general categories of these investigations and exchanges which often interpenetrate but generally fall into: 1) scholarly studies published in academic journals and one book, 2) finding and evaluating old press reports, and 3) Vietnam veteran anecdotal stories.
The chance of catching a contagious disease by being spit on is low. [6] After coffee cupping, tea tasting, and wine tasting, the sample is spit into a 'spit bucket' or spittoon. There have been instances of spitting reported in the US, particularly from American men. [7] In Minnesota, instances have been reported from some young people.
Early 20th century toleware spittoon Janitors at the United States Capitol with stack of spittoons, 1914. In the late 19th century, spittoons became a common feature of pubs, brothels, saloons, hotels, stores, banks, railway carriages, and other places where people (especially adult men) gathered, notably in the United States, but allegedly also in Australia.
The spitting spiders Scytodes can spit a venomous sticky fluid that traps its victims and also poisons them. [1] The bombardier beetle is unusual by using a violent exothermic chemical reaction to launch a boiling noxious chemical spray in a rapid burst of pulses from special glands in its abdomen, accompanied with a popping sound.
Bob Carolgees (born Robert Frederick Johnson; 12 May 1948 [1]) is a British comedy entertainer who appeared on the Saturday morning TV series Tiswas and then later in its adult versions O.T.T. and Saturday Stayback.
Drooling, or slobbering, is the flow of saliva outside the mouth. Drooling can be caused by excess production of saliva , inability to retain saliva within the mouth (incontinence of saliva), or problems with swallowing ( dysphagia or odynophagia ).