Peristalsis refers to the action of the involuntary muscle of the digestive track
Peristalsis involve a series of wave like muscle contraction that moves food to different processing station in the digestive tracts and it begins in the esophagus when bolus of food is swallowed. It involve involuntary movement of the longitudinal and circular muscle.
Answer:
is there a picture or anything following?
Explanation:
The correct answer to the question above would be whether the process of cell differentiation begins early or late. If the higher vertebrates are classified as indeterminates or determinate, then the division process may start earlier or later.
They are both living this and they are both made of cells