What is the open cavity of the digestive tract that contains the digested food molecules? A. Muscularis B. Mucosa C. Serosa D. Lumen

Match the following layers of the digestive tract with their characteristics. Serosa Mucosa Muscularis SubmucosaA. Muscle layer that contracts for peristaltic movement to move the food moleculesB. Muscle layer that lines the lumen and forms numerous folds to absorb digested food moleculesC. Outer layer that secretes a lubricating fluidD. Highly vascular layer that receives absorbed nutrients and passes it to the blood and lymph vessels

In the digestive tract, the lumen is defined as the Blank______.Multiple choice question.muscular walloutermost layercentral spacecontents that have been ingested

Unlike the digestive cavity, the body cavity isMultiple choice question.open to the exterior of the body via its connection to the respiratory system.isolated from the exterior of the body.open to the exterior of the body at one end.

Which of the following parts of the digestive system are not parts of the digestive tract – that is, food does not pass through them?

What layer of the digestive tract is the outermost layer that secretes a lubricating fluid to minimize friction for when the organs are moving to aid in digestion and absorption? A. Serosa B. Mucosa C. Submucosa D. Muscularis