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How do we feel when we touch a human salivary glands?

 How do we feel when we touch a human salivary glands?

Human saliva is secreted by three major types salivary glands which are

1. Parotid glands

2. Submandibular or submaxilary glands

3. Sublingual glands

Which are present in different parts of mouth along with these there are also some minor salivary glands present on our checks and lips also. When we touch a human salivary glands we feel wet as the secretion of this gland which is saliva contains 99.05% water and 0.05% solute. 

Want to know why it feels watery when we touch a human salivary glands in details? then read below to get your answer clearly. 

Salivary glands 

Salivary gland is an exocrine gland.

It releases a secretion of saliva in oral cavity. It is important to clean mouth and keep moist the mouth and pharynx.

when the food s entered into the mouth the tactile receptors sense it and promote salivary glands.

Even when we think about the food the salivary secretion increase from glands.

Saliva lubricates, dissolves and starts chemical breakdown of the food material.

The salivary glands present in the mouth and tongue.

There are some minor salivary glands including labial, buccal and palatal glands present in lips, checks and palate and lingual glands in the tongue.

Most of the saliva is secreted by major salivary glands. There are 3 pairs of major salivary glands

1. Parotid glands

2. Submandibular or submaxilary glands

3. Sublingual glands

Parotid glands

The parotid glands are located anterior and inferior to ear between skin and masseter muscle.

The parotid gland secretes saliva to oral cavity through parotid duct or duct of stenson that opens in the second upper molar tooth.

The parotid glands secret salivary amylase or diastase or ptyalin. It digests cooked starch into maltose and isomaltose.

Submandibular gland or submaxilary gland

It present in the floor of the mouth.

It secretes saliva into oral cavity through Submandibular duct or duct of Wharton and open to the lingual frenulum near lateral incisors.

It secretes fluid containing thick amylase with mucous.

Sublingual gland

The Sublingual glands are present under the tongue superior the Submandibular glands.

It secrets the saliva to oral cavity through the lesser Sublingual ducts or duct of rivinus.

It secretes mostly thick mucus and a small quantity of salivary amylase.

Composition and function of saliva

Saliva consists 99.05% water and 0.5% solute.

The solute part of saliva includes sodium, potassium, chlorine and phosphorous etc.

It gives a medium for dissolving food so that we can taste the food and start the digestive reaction.

The saliva also contains some gasses and organic substances like urea, uric acid, mucus, Immunoglobulin A, lysozyme, and salivary amylase.

Secretion of saliva is a reflex action, in response to taste of food it is inborn reflex or inherited reflex and in response to smell, thought, feel, sight of food it is acquired reflex.

Sympathetic nervous system decreases secretion of saliva.

Parasympathetic nervous system increases secretion of saliva.

During sleep the secretion of saliva decreases so the bacterial activities increases.

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