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Questions and Answers
What is the main function of serous cells in salivary glands?
What is the main function of serous cells in salivary glands?
Which type of salivary glands is responsible for producing 90% of total saliva?
Which type of salivary glands is responsible for producing 90% of total saliva?
What type of secretions do mucous cells in salivary glands produce?
What type of secretions do mucous cells in salivary glands produce?
Which type of salivary glands do not have ducts and constantly secrete saliva?
Which type of salivary glands do not have ducts and constantly secrete saliva?
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What stimulus causes the secretion of saliva in the extrinsic salivary glands?
What stimulus causes the secretion of saliva in the extrinsic salivary glands?
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Study Notes
Salivary Glands
- Salivary glands are classified into two groups: extrinsic (major) and intrinsic (minor) salivary glands.
Extrinsic (Major) Salivary Glands
- Located outside the oral cavity
- Have ducts to transport saliva into the oral cavity
- Secrete saliva on stimulation by: • Mechanoreceptors (chewing reflexes) • Chemoreceptors (stimulated by acidic substances)
- Produce 90% of total saliva
- Consists of: • 2 parotid glands • 2 submandibular glands • 1 sublingual gland
- Histology: composed of serous and mucous cells
Intrinsic (Minor) Salivary Glands
- Located inside the oral cavity
- No ducts
- Constantly secreting saliva
- Produce 10% of total saliva
- Consists of: • Buccal glands • Labial glands • Palatine glands
- Histology: mainly composed of mucous cells
Functions of Saliva
- Hydrate and clean the oral cavity (serous cells)
- Lubricate food and dissolve food substances for taste buds to detect (mucous cells)
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Description
Learn about the structure and function of salivary glands, including the two main groups (extrinsic and intrinsic) and their respective cells (serous and mucous). Explore how these glands produce saliva and the role of different secretions in hydrating, cleaning, lubricating, and facilitating taste perception in the oral cavity.
