Layers of the Digestive System

What is the innermost layer of the digestive tract?

• Serosa

• Muscularis externa

• Submucosa

• Mucosa

Which layer of the digestive tract is primarily responsible for segmentation and peristalsis?

• Mucosa

• Submucosa

• Muscularis externa

• Serosa

What is the function of the serosa layer in the digestive tract?

• It lines the alimentary canal lumen.

• It is rich with vasculature.

• It creates sphincters.

• It helps hold the system in place.

Which layer of the digestive tract is rich with vasculature?

• Mucosa

• Submucosa

• Muscularis externa

• Serosa

The peritoneum is associated with which layer of the digestive tract?

• Mucosa

• Submucosa

• Muscularis externa

• Serosa

Which layer of the digestive tract is responsible for creating sphincters?

• Mucosa

• Submucosa

• Muscularis externa

• Serosa

What is the correct order of the layers of the digestive tract from innermost to outermost?

• Serosa, Muscularis externa, Submucosa, Mucosa

• Mucosa, Submucosa, Muscularis externa, Serosa

• Submucosa, Mucosa, Serosa, Muscularis externa

• Muscularis externa, Serosa, Mucosa, Submucosa

Which layer of the digestive tract lines the alimentary canal lumen?

• Mucosa

• Submucosa

• Muscularis externa

• Serosa

The connective tissue in which layer of the digestive tract helps hold the system in place?

• Mucosa

• Submucosa

• Muscularis externa

• Serosa

Which of the following is NOT a function of the muscularis externa?

• Segmentation

• Peristalsis

• Creating sphincters

• Lining the alimentary canal lumen