Final answer:
The sublingual caruncles are not responsible for salivary secretion, but rather serve as openings for the ducts of the submandibular glands.
Step-by-step explanation:
The sublingual caruncles, also known as Wharton's duct openings, are small bumps located on the floor of the mouth, close to the base of the tongue. These caruncles do not secrete saliva; instead, they serve as openings for the ducts of the submandibular glands, which are responsible for secreting saliva into the oral cavity.