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 differences between aerobic and anaerobic respiration.
Respiration transfers energy from glucose for muscle contraction. Describe how glucose from the small intestine is moved to a muscle cell.
Explain the differences between aerobic and anaerobic respiration (in animals), when the transition occurs and why there is a need for the body to remove lactic acid that is built up during the process?
Discuss the advantages and disadvantages of using biofuels in the UK (4).