What primary duct connects with the submandibular gland?

The primary duct that connects with the submandibular gland is known as Wharton's duct. This duct serves as the excretory pathway for the submandibular gland, transporting saliva from the gland into the oral cavity. It is specifically located beneath the tongue and opens at the sublingual caruncle, which is an important anatomical landmark for both clinical and anatomical purposes.

Wharton's duct is significant because it plays a critical role in the salivary system, allowing for proper salivation and facilitating digestion. Understanding the anatomy of the salivary glands and their ducts is essential for professionals in dental and medical fields, as it helps in diagnosing and managing conditions related to salivary gland function, including infections, blockages, and sialolithiasis (salivary stones).

The other ducts mentioned in the options, while also relevant to glands, do not connect with the submandibular gland specifically. For example, Stenson's duct is associated with the parotid gland, and the duct of Rivinus is connected with the sublingual glands, making them insufficient choices for identifying the primary duct of the submandibular gland.