About Lesson
Composition:
- Mucus
- Amylase
- Lipase
- electrolyte solution
- Enzymes and Proteins
Functions:
- Acts as lubricants
- Coating of hard and soft tissues
- Help in Buffering
- Re-mineralization and inhibition of de-mineralization.
- Helps in digestion if Polysaccharides.
Secretion:
Saliva is secreted from salivary gland.
- Contains secretory parts/ units called acinus and ducts
- Acinar cells secrets fluid composed of water, mucus, electrolytes etc and these are flowed out and collected in collecting ducts.
- In duct, sodium ion is re absorbed and potassium is secreted.
- Bicarbonate is also secreted. It acts as buffer when combined with potassium.
- Small collecting duct combine and form large collecting duct which open in oral cavity.