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Question

List the types of cells found in salivary glands and their functions.


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Solution

Types of cells found in the salivary glands:

Serous cells:

  1. Serous cells are pyramidal in shape broad base and a narrow apex.
  2. Spherical nucleus placed basally.
  3. Secretory granules are called zymogen granules.
  4. Lumen is surrounded by 8-12 serous cells and is star-shaped due to the presence of intercellular canaliculi.
  5. Protein secreting features like RER basal and lateral to the nucleus and Golgi apparatus lateral and apical to the nucleus.
  6. They are involved in solubilizing the dry food, maintaining oral hygiene, and initiating starch digestion.

Mucous cells:

  1. The mucous gland is a constituent of salivary glands, producing a slippery, aqueous secretion.
  2. It produces a thick, viscous secretion, comprising mucin.
  3. Cells contain flattened nuclei against the basement membrane.
  4. Cells contain condensed chromatin and are stained in the light due to the presence of mucin.
  5. They are involved in lubricating the oral cavity and making food into the slippery bolus.

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