Which of the following statements about movement of food through the gut is FALSE? The inner circular muscle and outer longitudinal muscle layers in the gastrointestinal tract propel food unidirectionally towards the anus. O b. The pyloric sphincter controls exit of food out of the stomach. O c. The epiglottis and vocal chords prevent food entry into the trachea. O d. The waves of muscle contraction that propel food through the gut are called peristalsis. Oe. The correct order of food passage through the small intestine is duodenum, ileum then jejunum.

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