View the animation below, then complete the quiz to test your knowledge of the concept.

1	Involuntary muscle contractions which move a bolus through the gastrointestinal tract are called
	A)	mastication.
	B)	peristalsis.
	C)	defecation.
	D)	chime.
2	Hydrochloric acid is secreted in the
	A)	esophagus.
	B)	stomach.
	C)	small intestine.
	D)	large intestine.
3	Most nutrient absorption occurs in the
	A)	esophagus.
	B)	stomach.
	C)	small intestine.
	D)	large intestine.
4	What organ produces bile?
	A)	liver
	B)	small intestine
	C)	pancreas
	D)	stomach
5	Which of the following is the correct order for the major parts of the gastrointestinal tract?
	A)	esophagus, stomach, large intestine, small intestine, mouth
	B)	mouth, stomach, esophagus, large intestine, small intestine
	C)	mouth, small intestine, stomach, esophagus, large intestine
	D)	mouth, esophagus, stomach, small intestine, large intestine