The salivary glands are a group of exocrine glands that secrete saliva into the mouth. Saliva is a watery substance that contains enzymes, electrolytes, and mucus. It moistens food for swallowing, aids in digestion, and protects the teeth from decay.

Types of Salivary Glands:

There are three pairs of salivary glands in the human body: the parotid glands, the submandibular glands, and the sublingual glands. The parotid glands are located in front of the ears, while the submandibular and sublingual glands are located below the jaw. Each of these gland pairs has a different function in saliva production.

1. The Parotid Glands secrete a watery saliva that is rich in enzymes. This saliva helps to break down food for digestion.

2. The Submandibular Glands secrete a thicker saliva that contains more electrolytes and mucus. This saliva helps to keep the mouth moist and lubricates food for swallowing.

3. The Sublingual Glands secrete a very thin saliva that is rich in mucus. This saliva helps to keep the mouth moist and lubricated.

Salivary glands are important for maintaining oral health. Without saliva, the mouth would be dry and susceptible to infection. Saliva also helps to keep the teeth clean and free of bacteria.

Functions of Salivary Glands:

The salivary glands have several important functions:

  • They produce saliva, which moistens food for swallowing and aids in digestion.
  • They protect the teeth from decay by keeping them clean and free of bacteria.
  • They help to keep the mouth moist and lubricated.
  • They help to fight infection by producing antibodies that attack bacteria and viruses.
  • They help to regulate the level of blood sugar in the body by secreting enzymes that break down carbohydrates.

Diseases of the Salivary Glands:

There are several diseases that can affect the salivary glands, including:

  • Salivary gland tumors: These are growths that can develop in any of the salivary glands. Most are benign (non-cancerous), but some may be malignant (cancerous).
  • Sjögren’s syndrome: This is an autoimmune disorder that causes inflammation of the salivary glands, which leads to a decrease in saliva production.
  • Stones: Salivary stones are small, hard deposits that can form in the ducts of the salivary glands. They can block the flow of saliva and cause pain and swelling.
  • Infections: The salivary glands can be susceptible to infections, such as mumps and glandular fever.
  • Trauma: Injury to the head or face can damage the salivary glands and cause them to swell.

Treatment of Salivary Gland diseases:

  • The treatment of salivary gland diseases depends on the underlying cause. Tumors and stones may require surgery to remove them, while infections are typically treated with antibiotics. Sjögren’s syndrome is a chronic condition that has no cure, but treatments are available to help relieve the symptoms.
  • Prevention of salivary gland diseases is important in maintaining oral health. Practicing good oral hygiene, such as brushing and flossing regularly, can help to reduce the risk of infection.
  • Avoiding trauma to the head and face can also help to prevent damage to the salivary glands. Wearing a mouthguard when participating in contact sports can help to protect the glands from injury.


The salivary glands are an important part of the human body. They have several functions, including producing saliva, protecting the teeth from decay, and helping to keep the mouth moist and lubricated. There are several diseases that can affect the salivary glands, but most can be treated with surgery, antibiotics, or other medical interventions.

Prevention of salivary gland diseases is important in maintaining oral health. Good oral hygiene and avoiding trauma to the head and face can help to reduce the risk of developing a salivary gland disease.



1. Salivary Glands are made up of which tissue?

The salivary glands are made up of both serous and mucous tissue. The serous tissue produces watery secretions while the mucous tissue produces a thicker, more viscous secretion. Each type of tissue is important for different functions of the gland.

For example, the serous tissue helps to keep the mouth moistened and lubricated, while the mucous tissue helps to trap food particles and prevent them from being inhaled into the lungs. Together, both types of tissue work together to provide the essential functions of the salivary glands.

2. Salivary Gland is Endocrine or Exocrine?

The salivary glands are exocrine glands, meaning that they secrete their products (saliva) through ducts directly into the mouth. The products of the gland are then either swallowed or spit out. In contrast, endocrine glands secrete their products (hormones) directly into the bloodstream where they are then carried to target tissues throughout the body.

So, while the salivary glands are exocrine in nature, they do have some endocrine functions as well. For example, certain cells within the gland secrete hormones that help to regulate the production of saliva. Additionally, the salivary glands play a role in immune function and can produce antibodies that help to protect against infection.

3. How to help a clogged Salivary Gland?

There are a few things that you can do to help a clogged salivary gland. First, it is important to stay hydrated by drinking plenty of fluids. This will help to thin the saliva and make it easier for the gland to secrete. Additionally, try sucking on hard candy or chewing gum to stimulate saliva production. Finally, avoid foods that are high in acidity as this can worsen the condition. If the gland is still not functioning properly, you may need to see a doctor for further treatment.

4. What happens if you have no Salivary Glands?

If you have no salivary glands, you will not be able to produce saliva. This can lead to a number of problems, including difficulty swallowing, increased risk of cavities and gum disease, and an overall decrease in oral health. Additionally, without saliva to lubricate the mouth, you may experience dryness, burning, and irritation.

If you are missing all of your salivary glands, you will need to take special care of your mouth and may need to use artificial saliva products to keep your mouth moist.

5. How to eat without Salivary Glands?

If you have no salivary glands, you will need to take special care when eating. Avoid hard, crunchy, or sticky foods as these can be difficult to swallow and may cause irritation. Instead, focus on soft, bland foods that are easy to chew and swallow. Additionally, be sure to drink plenty of fluids with your meals to help keep your mouth moist. If you are having difficulty eating, you may need to see a doctor or dentist for further assistance.