TLS Online TPP Program

#Question id: 11962


 In the digestive system, peristalsis is ________.

#Unit 7. System Physiology – Animal
  1. a process of fat emulsification in the small intestine
  2. voluntary control of the rectal sphincters regulating defecation
  3. the transport of nutrients to the liver through the hepatic portal vessel
  4. smooth muscle contractions that move food along the oesophagus