SALIVARY GLAND
1. Salivary glands are also called as parotid glands.
2. It is a tubular or alveolar gland.
3. secretes saliva contains digestive enzyme ptyalin.
4. Each salivary gland consists of large number of lobules bound together by connective tissue, blood vessels, nerves and numerous fat cells.
5. Each lobule consists of alveoli or acini, lined by mucus cells and serous cells.
6. From alveoli arises duct unites to form a salivary duct which opens into the mouth.
7. Histologically salivary gland shows three types of cells which are as follows.
a) Serous cells secrete ptyalin.
b) Mucous cells secrete mucous and
c) Crescent cells - replace worn out cells.
Function of Salivary gland:
1. Saliva helps in moistening of food particle.
2. Salivary amylase act upon carbohydrates.
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