What is peristalsis?
Peristalsis is the mechanism by which gut muscles contract. There are two main types of muscle in the gut:
-longitudinal
-circular
Together, these muscles contract to create waves of movement. This allows food to travel through the digestive system.
SK
Related Biology GCSE answers
All answers ▸Describe the role of different structures (shown in the figure below) involved in the coordination of a reflex action and the sequence of events that occur(6 marks).
How and why are sperm cells specialised ?
explain how the body regulates blood sugar concentration
How do blood vessels control body temperature?