From the Research
No, the submandibular duct does not travel behind the palatine tonsils. The submandibular duct originates from the submandibular gland located beneath the floor of the mouth and travels forward and medially, as described in a study on the microanatomy of the submandibular and sublingual glands 1. It opens into the oral cavity at the sublingual caruncle, which is a small elevation located on either side of the lingual frenum at the base of the tongue. The duct's path takes it between the mylohyoid and hyoglossus muscles, then along the floor of the mouth. This is anatomically distinct from the palatine tonsils, which are located at the lateral walls of the oropharynx.
The anatomy of the ducts of the submandibular gland (SMG) and sublingual gland (SLG) is quite complicated, with three patterns of anatomic variation observed in a study of 30 adult cadavers 1. However, none of these variations involve the submandibular duct traveling behind the palatine tonsils. Understanding the correct anatomical pathways of these ducts is important for diagnosing and treating salivary gland disorders and performing intraoral procedures.
It's worth noting that another study on ultrasonic diagnosis of the tonsillar region 2 does not provide information on the path of the submandibular duct in relation to the palatine tonsils. Therefore, the most relevant and recent evidence from 1 should be considered when determining the anatomical relationship between the submandibular duct and the palatine tonsils.
Key points to consider:
- The submandibular duct travels forward and medially from the submandibular gland
- The duct opens into the oral cavity at the sublingual caruncle
- The duct's path is between the mylohyoid and hyoglossus muscles, then along the floor of the mouth
- The palatine tonsils are located at the lateral walls of the oropharynx, distinct from the submandibular duct's path.