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Related Concept Videos

Salivary Glands and Saliva01:23

Salivary Glands and Saliva

The salivary glands, of which there are three pairs known as the parotid, submandibular, and sublingual glands, play a crucial role in maintaining oral health and initiating the digestive process. Positioned near the ears, beneath the masseter muscle, the parotid glands secrete saliva into the oral cavity through the parotid duct of Stensen. Meanwhile, the submandibular glands, located on the floor of the mouth, secrete saliva through channels named submandibular ducts. The sublingual glands,...
Pipe Flowrate Measurement: Problem Solving01:28

Pipe Flowrate Measurement: Problem Solving

A spray tank system is engineered to uniformly distribute a pest-control liquid across plants by using a pressurized mechanism. The tank, pressurized to 150 kPa, holds the pesticide at a height of 0.80 meters. Liquid flows from the tank through a 1.9 meter pipe with a diameter of 0.015 meters, angled at 0.698 radians, ultimately reaching a 0.007 meter nozzle that sprays the pesticide. Accurate calculation of the system's flow rate is crucial to ensure uniform application, and this is achieved...
Pipe Flowrate Measurement01:28

Pipe Flowrate Measurement

In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
The orifice meter is a simple,...
Urodynamic Studies: Uroflowmetry01:19

Urodynamic Studies: Uroflowmetry

Uroflowmetry is a non-invasive urodynamic test designed to measure various aspects of urination, including volume, flow rate, and the time to void. This test is crucial for diagnosing and assessing conditions such as bladder outlet obstruction, bladder dysfunction, incomplete bladder emptying, incontinence, and urinary tract blockages caused by benign prostatic hyperplasia (BPH) and urethral strictures.Pre-Test Instructions:Before a uroflowmetry test, patients are typically advised to drink...

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Related Experiment Video

Updated: Jul 5, 2026

A Method for the Measurement of Salivary Gland Function in Mice
07:29

A Method for the Measurement of Salivary Gland Function in Mice

Published on: January 25, 2018

Measuring salivary flow: challenges and opportunities.

Mahvash Navazesh1, Satish K S Kumar,

  • 1Division of Diagnostic Sciences, University of Southern California School of Dentistry, 925 W. 34th Street, Los Angeles, CA 90089, USA.

Journal of the American Dental Association (1939)
|July 3, 2008
PubMed
Summary

Standardized saliva collection methods are crucial for accurate health assessments. This study provides guidelines for collecting unstimulated and stimulated whole saliva, improving diagnostic reliability for salivary gland hypofunction.

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Collecting Saliva and Measuring Salivary Cortisol and Alpha-amylase in Frail Community Residing Older Adults via Family Caregivers
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Collecting Saliva and Measuring Salivary Cortisol and Alpha-amylase in Frail Community Residing Older Adults via Family Caregivers

Published on: December 18, 2013

Related Experiment Videos

Last Updated: Jul 5, 2026

A Method for the Measurement of Salivary Gland Function in Mice
07:29

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Published on: January 25, 2018

Collecting Saliva and Measuring Salivary Cortisol and Alpha-amylase in Frail Community Residing Older Adults via Family Caregivers
08:25

Collecting Saliva and Measuring Salivary Cortisol and Alpha-amylase in Frail Community Residing Older Adults via Family Caregivers

Published on: December 18, 2013

Area of Science:

  • Biomedical diagnostics
  • Salivary diagnostics

Background:

  • Saliva analysis is vital for risk assessment, diagnosis, and monitoring disease progression.
  • Salivary gland hypofunction is linked to various medical conditions and medications.
  • Lack of standardized saliva collection methods hinders its clinical utility.

Purpose of the Study:

  • To provide standardized guidelines for saliva collection.
  • To outline methods for assessing salivary flow rate.

Main Methods:

  • Overview of different saliva collection techniques.
  • Detailed step-by-step protocols for unstimulated and stimulated whole saliva collection.

Main Results:

  • Presentation of a complete setup for saliva collection.
  • Guidelines for both unstimulated and stimulated whole saliva acquisition.

Conclusions:

  • Standardized saliva collection is essential for clinical practice, especially with increasing longevity and prevalence of salivary gland hypofunction.
  • These methods aid dentists in patient risk assessment and scientists in research.