1.

What are the properties of saliva?

Answer»

(i) The fluids secreted by major and minor salivary glands constitute saliva. 

(ii) Saliva is slightly acidic and its pH is 6.8 

(iii) Saliva is a mixture of water and electrolytes (Na+ K+,Cl, HCO3) derived from blood plasma, mucous, serous fluids and salivary amylase or ptyalin enzyme and lysozyme (antibacterial agent), secreted by salivary glands. 

(iv) Ions of thiocyanate are also present in saliva.



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