• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/13

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

13 Cards in this Set

  • Front
  • Back
The saliva is a mixture of the secretions of the 3 pairs of salivary glands -- __, __, __ and numerous small buccal glands. It is a colorless, slightly viscid, opalescent fluid. The composition varies with the relative proportion of the secretions of the different glands. The secretion of the __ is more watery and rich in ptyalin, while those of the __ and __ are more viscid, containing more of __, a __, and poorer in ptyalin.
parotid
submaxillary
sublingual

parotid
submaxillary
sublingual

mucin
glycoprotein
What is ptyalin?
enzyme in saliva that converts starch Ino Dextrin and Maltose
Objectives:

1. To determine the composition of saliva
2. To determine the function of saliva in the digestive process
-
Test reaction of saliva with following:

a. Resting saliva + phenolphthalein
b. Resting saliva + red litmus
c. Resting saliva + blue litmus
d. Resting saliva + congo red
a. no change
b. blue
c. no change
d. no change
What is phenolphthalein and congo red?
Phenolphthalein:
used as indicator in acid-base titration and as laxative


congo red:
used as a dye, biological stain, and chemical indicator; if not acid fast or lightfast
Based on the color reactions of the acid-base indicators used above, is the saliva sample acidic or basic?
Resting saliva is basic
Perform same test with STIMULATED saliva

a. Stimulated saliva + phenolphthalein
b. Stimulated saliva + red litmus
c. Stimulated saliva + blue litmus
d. Stimulated saliva + congo red
a. no change
b. blue
c. no change
d. no change
Based on color reactions of the acid-base indicators used above, is the saliva sample acidic or basic?
Stimulated saliva is basic
What are the inorganic constituents of saliva?
chloride
sulfur
phosphate
calcium
Write the chemical formula for the following:

chloride
sulfur
phosphate
calcium
see photo
Test for nitrites:

Add 2 drops of KI solution and 2 drops of starch paste. Result?
light blue
Viscosity Test

One tube place 10 ml saliva; the other 10 mL water.

Note which sol. filters faster
water and starch paste sol.
In conclusion, saliva is a mixture of the secretions of the 3 pairs of salivary glands -- parotid, submaxillary, sublingual and numerous small buccal glands. The composition and the viscosity varies with the relative proportion of the secretions of the different glands in the following tests. We can detect that saliva is __ wether resting or stimulated saliva (red litmus turns to blue and no reaction on phenolphthalein, blue litmus, and congo red). Saliva is also more __ than water. Furthermore, saliva tested __ for nitrites, but positive for the presence of __, __, __, and __
basic

viscous

negative
chlorides
phosphates
sulfates
calcium