The salivary glands secrete saliva which contains the enzyme 1 Pepsin 2 Rennin 3 Ptyalin 4 Lipase

How many pairs of salivary glands are there in human body? 1 1 2 2 3 3 4 4

The salivary glands secrete saliva which contains the enzyme ? a) Pepsin b) Renin c) Ptylin d) Lipase