Which of Following Processes is the Function of the Smooth

Question

Which of following processes is the function of the smooth muscle layer of the digestive system?
A)Ingestion
B)Secretion
C)Mixing and propulsion
D)Absorption
E)None of these choices

Accepted Answer

The smooth muscle layer of the digestive system is responsible for the mixing and propulsion of food through the digestive tract. This layer contracts in a rhythmic manner to move food through the digestive tract and mix it with digestive enzymes and other secretions. Ingestion refers to the process of taking food into the mouth, secretion refers to the release of digestive juices and enzymes, and absorption refers to the uptake of nutrients from digested food into the bloodstream. None of these processes are primarily controlled by the smooth muscle layer of the digestive system.