salivary glands


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salivary

 [sal´ĭ-ver-e]
pertaining to the saliva.
salivary glands the glands in the mouth that secrete saliva. The major ones are the three pairs known as the parotid, submaxillary, and sublingual glands (see Plates); there are other smaller salivary glands within the cheeks and tongue. The largest are the parotids, located below and in front of each ear. Saliva secreted by these glands is discharged into the mouth through openings in the cheeks on each side opposite the upper teeth. The submaxillary glands, located inside the lower jaw, discharge saliva upward through openings into the floor of the mouth. The sublingual glands, beneath the tongue, also discharge saliva into the floor of the mouth.



The saliva is needed to moisten the mouth, lubricate food for easier swallowing, remineralize the tooth surface, and provide the enzyme (ptyalin) necessary to begin food breakdown in the preliminary stage of digestion. The salivary glands produce about 1.5 liters of saliva daily.

The salivary glands are controlled by the nervous system. Normally they respond by producing saliva within 2 or 3 seconds after being stimulated by the sight, smell, or taste of food. This quick response is a reflex action.

In mumps (parotitis), the parotids become inflamed and swollen. Occasionally, salivary glands produce too much saliva; this condition is called ptyalism, and is the result of local irritation from dental appliances or of disturbances of digestion or of the nervous system or other causes. Certain diseases, drugs such as morphine or atropine, and nutritional deficiency of vitamin B can result in decreased secretion of saliva.
The salivary glands. From Jarvis, 2000.
salivary gland inclusion disease cytomegalic inclusion disease.

salivary glands

Three pairs of glands that open into the mouth to provide a cleaning, lubricating and digestive fluid. The largest pair, the parotid glands, lie in the cheek in front of the ear. The other two pairs, the sublingual and the submandibular glands are in the floor of the mouth.
References in periodicals archive ?
Simpson et al., "Mammary analogue secretory carcinoma of salivary glands molecular analysis of 25 ETV6 gene rearranged tumors with lack of detection of classical ETV6-NTRK3 fusion transcript by standard RT-PCR: report of 4 cases harboring ETV6-X gene fusion," The American Journal of Surgical Pathology, vol.
SWV measurements are relatively easy to obtain during routine ultrasound imaging of the salivary glands. Cornec et al.
The aim of this study was to assess the immunohistochemical expression pattern of three BPIF proteins in head and neck tissues from very early human fetuses and in the major and minor salivary glands, tongue and palate of later-stage human fetuses.
'The parasites seem to have no trouble getting into the salivary glands,' says Wells.
20 Ellis GL,Auclair PL,Gnepp DR,Obstructive disorders in:surgical pathology of salivary glands. philadelphia:WB saunders:1991;26-38.
TGF-[alpha] is a 50 amino acid mitogenic polypeptide that has been detected from a variety of exocrine glands of body including lacrimal glands, pancreas and in the striated ducts of both human submandibular and sublingual salivary glands (Yasui et al., 1992; Mogi et al., 1995; Humprey-Beher et al., 1994; Chiang et al., 2001; Ogbureke et al., 1995; Dernyk, 1988).
Out of 114 neoplastic lesions, parotid gland was most common site observed with 90 (78.94%) cases followed by 14(12.28%) cases in submandibular glands, 8 (7.01%) cases in minor salivary glands and two cases (1.75%) involving sublingual gland respectively.
YOKOHAMA, Japan, October 11, 2018 -- Scientists here have for the first time have grown 3D salivary gland tissue that produced saliva like normal glands when implanted into mice.
suggested that low-to-intermediate-grade MECs originating from intraoral minor salivary glands can be managed by wide local surgical excision that ensures tumor-free surgical margins.[13] If there is no evidence of bony involvement, the tumor should be dissected down to the periosteum.
Although salivary glands of rodents and humans exhibit certain similarities, butvary to some extent in their structure, location and development.
Pleomorphic adenomas (PAs) are the commonest tumour of both major and minor salivary glands with about 80-90% of PA occurring in the parotid gland [3].

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