What Is the Importance of the Mucus That Are Released

What is the importance of the mucus that are released by salivary glands?

A) They aid in degradation of triglycerides to fatty acids and monoglycerides.
B) They are beginning the process of starch digestion.
C) They are hormonal molecules that stimulate the release of gastric juice by the stomach in anticipation of receipt of the contents of the mouth.
D) They are glycoproteins that make food slippery enough to slide easily through the esophagus.