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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).
A 1930s poster from the Work Projects Administration promoting oral hygiene. Tooth decay is the most common global disease. [14] Over 80% of cavities occur inside fissures in teeth where brushing cannot reach food left trapped after eating and saliva and fluoride have no access to neutralize acid and remineralize demineralized teeth, unlike easy-to-clean parts of the tooth, where fewer ...
Range of mouthwashes by Listerine. Mouthwash, mouth rinse, oral rinse, or mouth bath [1] is a liquid which is held in the mouth passively or swirled around the mouth by contraction of the perioral muscles and/or movement of the head, and may be gargled, where the head is tilted back and the liquid bubbled at the back of the mouth.
The name Urdu was first introduced by the poet Ghulam Hamadani Mushafi around 1780. [29] [30] As a literary language, Urdu took shape in courtly, elite settings. [80] [81] While Urdu retained the grammar and core Indo-Aryan vocabulary of the local Indian dialect Khariboli, it adopted the Perso-Arab writing system, written in the Nastaleeq style.
The Urdu alphabet (Urdu: اُردُو حُرُوفِ تَہَجِّی, romanized: urdū ḥurūf-i tahajjī) is the right-to-left alphabet used for writing Urdu. It is a modification of the Persian alphabet, which itself is derived from the Arabic script. It has co-official status in the republics of Pakistan, India and South Africa.
Sindhi is a language broadly spoken by the people of the historical Sindh region in the Indian subcontinent.Modern Sindhi is written in an extended Perso-Arabic script in Sindh province of Pakistan [1] and (formally) in extended-Devanagari by Sindhis in partitioned India. [2]
The Urdu ghazal makes use of a store of common characters, settings, images, and metaphors that inform both readers and poets of how to navigate the aforementioned ghazal universe. [33] These tropes have been cultivated for hundreds of years and are meant to deeply resonate with listeners of the ghazal, invoking their expectations of meaning. [33]
Since the early twentieth century Khowar has been written in the Khowar alphabet, which is based on the Urdu alphabet and uses the Nasta'liq script. Prior to that, the language was carried on through oral tradition. Today Urdu and English are the official languages and the only major literary usage of Khowar is in both poetry and prose composition.