Saliva Flashcards
What is saliva?
Glandular secretion which bathes teeth and oral mucosa
What are 3 major components of saliva?
- Water
- Proteins / Glycoproteins
- Electrolytes
Why is saliva fluid not lost?
It is swallowed and reabsorbed by gut
What 4 glands are responsible for saliva production?
- Parotid gland
- Submandibular gland
- Sublingual gland
- Minor salivary glands
What are salivary outputs from the glands when unstimulated?
Parotid - 20%
Submandibular - 65%
Sublingual - 8%
Minor - 7%
What are salivary outputs from the glands when stimulated?
Parotid - 50%
Submandibular - 35%
Sublingual - 8%
Minor - 7%
Where is the parotid gland located?
In front of ear and behind the ramus of the mandible
Where does the parotid gland duct open?
Into the cheek opposite the 2nd molar of the upper jaw
Where is the submandibular gland located?
Between body of the mandible and floor of the mouth
Where does the submandibular gland duct open?
Floor of the mouth underneath anterior part of the tongue
Where is the sublingual gland located?
Floor of the mouth beneath sublingual folds of mucous membrane
Where does the sublingual gland duct open?
Numerous ducts open on the summit of the sublingual fold
What are 3 main features of unstimulated saliva?
- Confers most protection
- Importance of minor and submandibular output
- Low output during sleep
What are 3 main features of stimulated saliva?
- Protection during mastication (chewing)
- Assists in deglutition (swallowing)
- Importance of parotid output
What are the two cells of the salivary glands?
- Serous
2. Mucous