What does the submandibular gland primarily produce?

The submandibular gland primarily produces most of the nighttime saliva. This gland is one of the major salivary glands located beneath the jaw and is responsible for secreting a mixture of serous (watery) and mucous saliva. During nighttime, when salivary production occurs at a lower level than during the day, the submandibular gland plays a significant role in maintaining oral moisture and aiding in the initial stages of digestion, even in the absence of food intake.

While there are other glands that contribute to saliva production during meals or throughout the day, the submandibular gland's contribution during nighttime is particularly vital for oral health. It helps prevent dryness in the mouth and supports the natural saliva flow necessary for protecting oral tissues. Understanding the significance of this gland in the context of saliva production highlights its essential role, especially during periods of lower activity when other glands may not be as active.