Download JMJ Name: March 20, 2017 7th Grade Science Miss Dixon Digestive

JMJ
Name: __________________________
7th Grade Science
Miss Dixon
Digestive System Test Review
March 20, 2017
1. What is the purpose of the digestive system?
2. A ___________________ is a substance that the body breaks down and uses to grow, repair, and
function
3. List the 6 overall processes of the digestive system.
4. The long, hollow, twisted, and coiled tube that runs through the body is called the
____________________________ canal.
5. What occurs during ingestion?
6. _____________________________ is the process by which a substance is released from an organ or
gland to assist in digestion.
7. What are the glands called that produce saliva?
8. _______________________speed up a reaction.
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9. What is hydrochloric acid and where is it found?
10. __________________is a lubricant that helps food to slide down esophagus easily and it also lines
the stomach walls to protect it from the strong acid inside
11. Bile is produced by the __________________________, stored in the___________________________, and
released into the___________________________________.
12. What is the function of bile?
13. Where does mixing begin in the digestive system?
14. The soft, round mass of chewed food that leaves the mouth into the esophagus is called
the__________________.
15. The tongue helps to move the bolus into the _____________________.
16. What is in gastric juice?
17. A ______________________ is an enzyme that breaks down proteins; __________________ is a
_____________________ in gastric juice
18. The actual breaking down of complex food into basic building blocks is _______________________.
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19. The following macromolecules are broken down into building blocks during digestion:
a. Lipids:_______________________________________________________
b. Proteins:____________________________________________________
c. Carbohydrates:_____________________________________________
20. The two types of digestion are _________________________________ and _______________________________.
21. List four examples of chemical digestion. Include the location of each.
22. Symbiotic bacteria that break down some materials are ______________________________________.
23. Where does most of the absorption take place?
24. The nutrients are absorbed into the capillaries. Explain what this means.
25. The removal of waste products is ___________________________.
26. How are the nervous and endocrine systems related to the digestive system?
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27. The adult jaw contains _______ teeth.
28. List the four types of teeth.
29. Please label the enamel, crown root, cementum, and dentin.
30. The enamel is the hard ________________ on the outside of the tooth.
31. The crown is the part of tooth above the ________________.
32. The ________________ is the part of tooth that anchors it into gum
33. The cementum is a thin, bony material that fixes the _________________ to the _________________.
34. The largest part of tooth, the hard bone-like tissue under enamel, is the ______________________.
35. The __________________ is the primary organ of taste and has _____________________to send taste
information to the _______________ where it is processed.
36. The movement of muscle contractions which push the food is ______________________________.
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37. The stomach can expand to about _________ liters and food remains in the stomach for about
_______________ hours.
38. After the stomach, the bolus is called ___________________________.
39. The small intestine is about __________________ feet long; the length provides ____________________
and _____________________ for the absorption of nutrients.
40. Describe the structure and purpose of the villi in the small intestine.
41. The entrance to the small intestine from stomach is the ______________________________.
42. The large intestine is shorter than the small intestine; why is it called the “Large” intestine?
43. The function of the large intestine is 1) to absorb any remaining ___________________,
________________________, & ________________________ and 2) remove __________________ through
rectum and anus.
44. What is portal circulation?
45. Describe assimilation.
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46.
47. Please label the mouth, esophagus, small intestine, pharynx, stomach, large intestine, liver,
and duodenum in following diagram