Homo sapiens minor salivary gland labial gland 2023-06-19T12:41:05Z labial minor salivary gland The labial gland is one of the minor salivary glands, located mainly under the mucosal epithelium of the upper and lower lip and within the orbicularis oris muscle fibers. The labial gland secrete mucous and serous substances to maintain oral health. In particular, the inferior labial gland not only promotes moisturization in the oral cavity but also secretes substances with antibacterial effects. UBERON:8480065 labial salivary gland BTO:0001548 Paula Duek Roggli