digestive system

Question 1

3. in which of the following does chemical digestion not occur? mouth, esophagus, small intestine, or stomach

Answer 1

esophagus (discovery stations- digestive system: station 3)

Question 2

5. which of the following structures secretes enzymes that help us digest carbohydrates, lipids, and proteins?

Answer 2

pancreas (discovery stations- digestive system: station 6)

Question 3

7. out of the ileum, jejunum, and duodenum, what accurately reflects the order in which the bolus travels through the small intestine?

Answer 3

duodenum, jejunum, ileum (discovery stations- digestive system: station 7)

Question 4

9. what is false about macromolecules?

Answer 4

lipids get broken down into fatty acids and amino acids (Concept 1 Notes: The Digestive System- page 9)

Question 5

11. give an example of an endocrine function of the pancreas that aids in digestion

Answer 5

pancreatic islets release insulin and glucagon to aid in carbohydrate metabolism (discovery stations- digestive system: station 6)

Question 6

17. the small intestine extends from what?

Answer 6

pyloric sphincter to the ileocecal valve (discovery stations- digestive system: station 7)

Question 7

26. which alimentary segment has no digestive function?

Answer 7

esophagus (discovery stations- digestive system: station 2)

Question 8

28. what cannot be absorbed by the large intestine?

Answer 8

protein discovery stations- digestive system: station 8)

Question 9

30. what substance coats and protects the inside of the stomach?

Answer 9

mucus (discovery stations- digestive system: station 3)

Question 10

34. explain the main function of the small intestine and two ways its structure aids in accomplishing this function

Answer 10

the small intestine is known for being the main site of chemical digestion and nutrient absorption. the folds and villi aid to maximize the surface area for nutrients being absorbed into the blood (discovery stations- digestive system: station 7)

Question 11

35(1). the majority of the steps in the digestive process happen in multiple structures in the alimentary canal at the same time. what two steps only occur in one organ? list the first step and where it occurs

Answer 11

ingestion- occurs only in the mouth (discovery stations- digestive system: station 1)

Question 12

35(2). the majority of the steps in the digestive process happen in multiple structures in the alimentary canal at the same time. what two steps only occur in one organ? list the second step and where it occurs

Answer 12

defecation- occurs only in the large intestine (discovery stations- digestive system: station 8)