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  •  Saliva contains ______ which prevents microbes from penetrating the epithelium, and ________, which makes saliva antimicrobial. Choose the correct option to fill in the blank

 Saliva contains ______ which prevents microbes from penetrating the epithelium, and ________, which makes saliva antimicrobial. Choose the correct option to fill in the blank

 

Option: 1

Immunoglobulin A and lysozyme

 


Option: 2

Immunoglobulin E and bicarbonate

 


Option: 3

Lysozyme and phosphate ions

 


Option: 4

Ptyalin and immunoglobulin G

 


Answers (1)

best_answer
 
  • The secretion of salivary glands is called saliva.
  • The secretion of saliva is called salivation.
  • Saliva is essentially (95.5 per cent) water. 
  • The remaining 4.5 per cent is a complex mixture of ions, glycoproteins, enzymes, growth factors, and waste products.
  • The most important ingredient in saliva from the perspective of digestion is the enzyme salivary amylase, also called ptyalin, which initiates the breakdown of carbohydrates.
  • Bicarbonate and phosphate ions function as chemical buffers, maintaining saliva at a pH between 6.85 and 7.4.
  • Salivary mucus helps lubricate food, facilitating movement in the mouth, bolus formation, and swallowing. 
  • Saliva contains immunoglobulin A, which prevents microbes from penetrating the epithelium, and lysozyme, which makes saliva antimicrobial.

Saliva contains immunoglobulin A, which prevents microbes from penetrating the epithelium, and lysozyme, which makes saliva antimicrobial. Hence, the correct answer is option a.

Posted by

Divya Prakash Singh

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