What is produced by the major and minor salivary glands?

• A. Saliva
• B. Blood plasma
• C. Bile
• D. Mucus

Answer: (A)

Saliva is the secretion produced by the major and minor salivary glands. This saliva serves as a lubricant for the mouth, begins digestion with enzymes like amylase, helps wash away food particles, buffers acids to protect teeth, and delivers antimicrobial components to support oral health. The major glands (parotid, submandibular, and sublingual) along with many minor glands continuously supply saliva to the oral cavity. In contrast, blood plasma and bile come from other organs (blood and liver, respectively), and mucus is produced by mucous glands in various tissues; while saliva may contain mucins that give it a slippery, mucus-like quality, its primary secretion from the salivary glands is saliva.