The Innermost Layer of the Alimentary Canal is Called the Tunica

Question

The innermost layer of the alimentary canal is called the tunica ____.
A) submucosa
B) mucosa
C) serosa
D) adventitia

Accepted Answer

The innermost layer of the alimentary canal, which is in direct contact with the food, is called the mucosa. The submucosa is a layer of connective tissue that lies beneath the mucosa, the serosa is the outermost layer of the digestive tract that provides protection and support, and the adventitia is a layer of connective tissue that surrounds organs and provides support.