Digestive System Worksheet

 

1)      What are the four functions of the digestive system? __________________________

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2)    What are the 6 processes of digestion? ____________________________________

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3)    What are nutrients? ___________________________________________________

 

4)    List the 5 types of nutrients. ____________________________________________

 

5)    What other substance, while not considered a nutrient, is absorbed by our digestive system and essential for proper function of the body? __________________________

 

6)    What is the difference between a vitamin and a mineral? Give 2 examples of each. _____

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Matching. Match each alimentary organ to the digestive processes that they perform (HINT: Most processes will list more than one organ!).

a. Mouth                                     b. Pharynx                                   c. Esophagus

d. Small Intestine                        e. Large Intestine

7)    Ingestion ____________________________

8)    Defecation ___________________________

9)    Propulsion ____________________________

10) Peristalsis ____________________________

11)  Mechanical Digestion- churning ____________________________

12) Mechanical Digestion- segmentation ____________________________

13) Mechanical Digestion- mastication ____________________________

14) Absorption- Nutrients ______________________

15) Absorption- Water _________________________

16) Chemical Digestion- carbohydrates_______________________

17) Chemical Digestion- proteins ___________________________

18) Chemical Digestion- lipids __________________________

 

19) What four factors provoke and control digestive activity? _______________________

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20) What serous membrane would line the esophagus? ____________________________

21)  What are the four tunics of the GI tract walls from innermost to outer most? _______

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20) Which tunic is the same as the visceral peritoneum? ___________________________

 

21) Which muscle works as a valve between the esophagus and stomach? _______________

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22) What region of the stomach ends in the “gatekeeper” for stomach emptying? What is the proper name for the “gatekeeper”? _____________________________________

     __________________________________________________________________

 

23) What substance is food mixed into in the stomach? ___________________________

 

24) What rolls does saliva play in digestion? ____________________________________

          __________________________________________________________________

 

25) What does pepsin do? Where is it used? ___________________________________

 

26) What structure prevents backflow from the large intestine into the small intestine? ___

     __________________________________________________________________

 

27) What region of the small intestine has ducts delivering fluids from the liver, gallbladder and pancreas? ________________________________________________________

 

28) What 3 structures increase the surface area of the inside of the small intestine? _____

     __________________________________________________________________

 

Matching. Match each substance with the appropriate description. (HINT: Descriptions may apply to more than one substance!)

a. amylase                     b. lysozyme                     c. HCl                  d. pepsin

e. bile                           f. lipase                           g. trypsin

29) Found in saliva and pancreatic juice ________________

30) Made by liver _______________

31) Chemically digests carbohydrates ________________

32) Chemically digests proteins in acidic conditions ____________

33) Chemically digests proteins in non-acidic conditions ____________

33) Concentrated and store by the gallbladder ________________

34) Used to break down proteins in small intestine ___________

35) Destroys bacteria _______________

36) Breaks down fat ____________