The Outermost Layer of the Digestive Tract is The

Question

The outermost layer of the digestive tract is the:
A) muscularis externa.
B) submucosa.
C) serosa.
D) mucosa.

Accepted Answer

The outermost layer of the digestive tract is called the serosa, which is a thin layer of connective tissue that protects and supports the digestive organs. The muscularis externa is a layer of muscle tissue that helps move food through the digestive tract, the submucosa is a layer of connective tissue that contains blood vessels, nerves, and glands, and the mucosa is the innermost layer that lines the digestive tract and absorbs nutrients.