The salivary glands in mammals are exocrine glands that produce saliva through a system of ducts. Humans have three paired major salivary glands (parotid, submandibular, and sublingual), as well as hundreds of minor salivary glands. Salivary glands can be classified as serous, mucous or seromucous (mixed).

In serous secretions, the main type of protein secreted is alpha-amylase, an enzyme that breaks down starch into maltose and glucose, whereas in mucous secretions the main protein secreted is mucin, which acts as a lubricant.

In humans, between 0.5 and 1.5 litres of saliva are produced every day. The secretion of saliva (salivation) is mediated by parasympathetic stimulation; acetylcholine is the active neurotransmitter and binds to muscarinic receptors in the glands, leading to increased salivation

• Major salivary glands
  • PAROTID GLAND
    • Superficial part
    • Deep part
    • Accessory parotid gland
    • Parotid duct
  • Sublingual gland
    • Major sublingual duct
    • Minor sublingual ducts
  • Submandibular gland
    • Submandibular duct
• Minor salivary glands
  • Labial glands
  • Buccal glands
  • Molar glands
  • Palatine glands
  • Lingual glands

• Serous salivary gland
• Mucous salivary gland