Most of the Blood Vessels and Nerves in the Digestive

Question

Most of the blood vessels and nerves in the digestive tract are located in the layer of:
A) muscularis externa.
B) submucosa.
C) serosa.
D) mucosa.

Accepted Answer

The submucosa layer of the digestive tract contains the blood vessels and nerves that supply the digestive mucosa. The muscularis externa layer consists of smooth muscle and is responsible for the movement of food through the digestive tract. The serosa layer is the outermost layer of the digestive tract and provides protection and support. The mucosa layer lines the inner surface of the digestive tract and is responsible for absorption and secretion.