EBK STUDY GUIDE FOR UNDERSTANDING PATHO
EBK STUDY GUIDE FOR UNDERSTANDING PATHO
6th Edition
ISBN: 8220103144537
Author: MCCANCE
Publisher: YUZU
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Chapter 35.1, Problem 1QC
Summary Introduction

To explain: The functions of saliva.

Concept introduction: Saliva is a fluid substance formed in the mouths of animals. It is produced by the three pairs of salivary gland - sublingual, parotid, and submandibular glands. Saliva is composed of more than 99% water and less than 1% solids.

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Explanation of Solution

Major functions of saliva

  • Saliva facilitates the digestion of carbohydrate in the mouth through the enzymatic action of the enzyme salivary amylase which breaks down the polysaccharide into disaccharide (maltose).
  • It aids in the swallowing process by providing lubrication due to the presence of mucus.
  • Saliva can act as a solvent for the molecules that activate taste-buds.
  • Saliva consists of immunoglobulin A, mucin, and other antimicrobial substances that function to prevent many infections.
  • The concentration of bicarbonate in saliva maintains a pH of around 7.4 that can neutralize the bacterial acids. Thus, it prevents tooth decay.

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