5 Questions
What is the main function of serous cells in salivary glands?
Hydrate and clean the oral cavity
Which type of salivary glands is responsible for producing 90% of total saliva?
Parotid glands
What type of secretions do mucous cells in salivary glands produce?
Viscous secretions
Which type of salivary glands do not have ducts and constantly secrete saliva?
Sublingual glands
What stimulus causes the secretion of saliva in the extrinsic salivary glands?
Mechanoreceptors responding to chewing reflexes
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)
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.
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