专业术语—口腔生理学术语S3(英文详解)_医务英语

    stem cells - cells from which a number of more stimulated saliva - saliva which has been stimulated by chewing.

    stippled - a pattern which is made of small dots. gingiva has a stippled appearance due to small depressions caused by the attachment of clumps of fibres in the lamina propria to the basement membrane of the epithelium..

    striated ducts - ducts which carry saliva from the intercalated ducts to a series of main collecting ducts. striated duct cells are actively involved in secretion and absorption. their striated appearance is due to the many long folds of the cell membrane.

    submucosa - a layer beneath the lamina propria of mucosa, which is loose and elastic. it may contain large blood vessels, nerves, glands and lymphatic tissue.

    substance p - a neuropeptide with a particularly powerful ability to excite a post synaptic cell. when substance p is released into a synapse of a sensory neurone it causes severe pain.

    sulcus - see gingival sulcus.

    super-saturated solutions - when a solution is saturated and still more ions are added, they cannot be held in solution but precipitate as a solid deposit. the proline-rich proteins of saliva are capable of binding calcium. they hold a store of calcium ions which allows saliva to carry more ions in solution than is theoretically possible. saliva is thus a super-saturated solution of calcium phosphate.