BIO104 CH2 Q& A

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Jan 9, 2024

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BIO104 CH2 Q&A Review 1 . Segmentation begins when a bolus enters the esophagus. a. True b. False 2. Bile is produced by the liver and delivered by the gallbladder to emulsify fats. a. True b. False 3. Another name for the digestive tract is the: g a s t r o i n t e s t i n a l t r a c t
. 4. Identify the correct order of the digestive tract from beginning to end. 5. . A bolus is a portion of food swallowed at one time. 6. Which of the following is formed in the mouth? a. bile b. stomach acid c. chyme d. villus e. Bolus 7. During swallowing of food, which of the following prevents food from entering the lungs? e p i
g l o t t i s . 8. The stomach empties into the: duo den um 9. Chyme is: s e m i l i q u i
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d m a s s o f p a r t i a l l y d i g e s t e d f o o d . 10. Which two organs secrete digestive juices into the small intestine?
gall bla dde r and pan cre as 11. The movement of chyme from the stomach into the small intestine is regulated by the: p y l o r i c s p h i n c t e r .
12. Peristalsis is a term that refers to the: acti on of the inv olu ntar y mu scle s of the dig esti ve trac t. 13. Involuntary muscle contractions move food through the intestinal tract. The movement that forces the contents back a few inches before pushing it forward again is called: segmentation. 14. Which enzyme breaks down starch in the mouth? salivary amylase 15. Mucus in the stomach serves to: coat and protect stomach cells from gastric juices.
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16. Which nutrients are digested in the small intestine? c a r b o h y d r a t e , f a t , a n d p r o t e i n 17. The major digestive enzyme secreted by the stomach is:
pep sin 18. The main function of bile is to: emulsify fats. 19. The emulsification of fat requires: b i l e 20. Fiber functions to: s t i m u l a t
e t h e G I t r a c t m u s c l e s . 21. The primary site of nutrient absorption is the: s m a l l i
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n t e s t i n e . 22. Which of the following nutrients is/are absorbed into the lymphatic system? f a t - s o l u b l e v i t a m i n s
23. . After digestion, lipids are packaged for transport as lipoproteins known as: b l o o d s t r e a m . 24. The lymphatic system: .

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