The submandibular gland wraps around the posterior border of the mylohyoid muscle. Which part of the gland lies above the mylohyoid, and through which duct does saliva drain into the oral cavity?

• A Deep part; submandibular (Wharton's) duct
• B Superficial part; submandibular (Wharton's) duct ✓
• C Deep part; parotid (Stensen's) duct
• D Superficial part; Bartholin's duct

Explanation

The submandibular gland has a large superficial part lying below the mylohyoid and a small deep part that hooks around the posterior border of mylohyoid to lie above it on the floor of the mouth. The deep part drains through the submandibular (Wharton's) duct which opens at the sublingual caruncle beside the frenulum of the tongue. The superficial part is below the mylohyoid.

Reference: Gray's Anatomy, 42nd ed.

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Written and medically reviewed by the StethoPrep medical team.