BI-1783
The digestive system
Biology · Secondary 4 · Medium · The digestive system
During peristalsis in the oesophagus, what happens to the muscle layers just in front of a moving bolus of food?
- Circular relax, longitudinal contract
- Circular contract, longitudinal relax
- Circular contract, longitudinal contract
- Circular relax, longitudinal relax
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.