Stensen's duct, also known as the parotid duct, is the main passageway for saliva produced by the parotid gland to reach the mouth. It's a crucial part of the salivary system, facilitating the delivery of saliva for digestion and oral hygiene. The reference states, "The parotid duct (Stensen's duct) is the main excretory duct of the parotid gland. Saliva produced in the parotid gland gains access to the oral cavity through Stensen's duct, which has intra-parotid and extra-parotid segments."
Key Features of Stensen's Duct
| Feature | Description |
|---|---|
| Primary Function | Main duct carrying saliva from parotid gland |
| Location | Runs from parotid gland to the oral cavity |
| Components | Intra-parotid and extra-parotid segments |
| Role | Excretes saliva into the mouth |
How it Works
- Saliva Production: The parotid gland generates saliva, which contains enzymes crucial for breaking down food and maintaining a moist environment in the mouth.
- Duct System: The saliva travels through a network of small ducts within the parotid gland which then leads into the Stensen's duct.
- Delivery to Mouth: Stensen's duct carries the saliva and opens into the oral cavity, specifically near the upper second molar teeth.
Clinical Relevance
Understanding Stensen's duct is important in various medical contexts:
- Salivary Stones (Sialolithiasis): Blockages can occur within the duct by calcified masses which can obstruct the flow of saliva, causing swelling and pain.
- Infections (Sialadenitis): The Stensen's duct can become infected resulting in painful swelling of the parotid gland.
- Diagnostic Importance: Imaging studies of the duct, like sialography, can assist in identifying abnormalities.
