Download Lab 11 Anatomy of the Digestive System, Digestive Histology

Lab 11
Anatomy of the Digestive System, Digestive Histology &
Enzymes - Post-Lab Questions
Suggestions:
Section I - Each question in this section carries a 0.5 point value. Mix and match any
two questions to make up a question with 1 point value
1.
Identify an accessory organ of the digestive system.
2.
Identify any portion of the alimentary canal.
3.
How many layers are there in the wall of the GI tract?
4.
What is a villus (villi)? Where is it found?
5.
In which layer of the GI tract would you find lamina propria?
6.
Islet cells are found in what organ?
7.
What is another name for a liver cell?
8.
What is the name of the tube that carries food from the pharynx to the stomach?
9.
What are the three parts of the small intestine?
10.
Name the specializations exhibited by the small intestine for increased digestion and
absorption.
11.
Name the salivary glands.
12.
What is the function of the tunica mucosa?
13.
What is the function of the muscularis externa?
14.
_____________ is the large collection of lymphoid tissue found in the submucosa of
the large intestine
15.
_____________ valve is at the junction between the small and large Intestine
16.
_____________________ is the structure that suspends the small intestine from the
posterior body wall
17.
This is a passageway for both air and food ___________________________
18.
How many lobes are there in the human liver?
19.
20.
To what portion of the colon is the appendix attached?
_________________________ is the ligament that attaches the tooth to the alveolar
socket
21.
__________________ is the exposed part of the tooth above the gingiva
22.
________________ is a calcified connective tissue that attaches the tooth to
the periodontal ligament
23.
____________________ is the duct formed by the joining of the common hepatic
duct and the cystic duct.
24.
What is the name of the duct that drains bile from the gall bladder?
25.
Identify any layer of the GI tract from the attached diagram/projected image.
26.
Identify any structure from the cat digestive system on the diagrams provided/image.
27.
Identify any structure/organ of the digestive system from the diagrams
provided/projected image.
28.
What effect does the addition of an appropriate enzyme have on a reaction rate?
29.
What is the name of the protein digesting enzyme that was used in the lab?
30.
Identify the organ that secretes trypsin in humans.
31.
What is the substrate for trypsin in the enzymes lab?
32.
Identify any organ that secretes amylase.
33.
What is the substrate for amylase in the lab?
34.
Amylase digests starch into what product?
35.
A positive benedict’s test means what is present in solution?
36.
A solution turns blue-black in the presence of iodine. What is present in the
solution?
37.
Lipases catalyze a reaction between H2O and lipids and produce which products?
38.
What substance could be added to a solution of lipase, water and fat to increase the
effectiveness of the lipase?
39.
Blue litmus turns pink in (acid/base) pH. ( Pick the appropriate answer)
40.
In the digestive enzymes lab, Benedict’s solution tested for _________________?
41.
Compare and contrast salivary and pancreatic amylase
42.
Lipases catalyze a reaction between water and lipids and produce which products?
43.
What is the name of the protein digesting enzyme?
44.
Trypsin is produced by _____________________
45.
Amylase is produced by ________________
46.
A _____________________ provides a standard of comparison for test results
47.
___________ is the test for the presence of starch; indicated by a blue-black color
48.
_______________________ Test for the presence of a reducing sugar (eg, maltose,
sucrose, glucose); indicated by a color change from blue to green
49.
Lipase is produced by _________________________
50.
What is emulsification?
51.
Name the end product(s) of lipid metabolism.
52.
Name the end product of Carbohydrate metabolism
53.
Name the end product of protein metabolism
54.
Diagram or projected image of prepared slides of duodenum, liver, pancreas,
stomach - you can ask for any structure that is listed in the objectives.
Section II
Each question in this section carries a 1 point value
55.
The small intestine exhibits three specializations to increase surface area for
digestion and absorption. List and briefly describe these specializations
56.
How is the cat digestive system different from the human digestive system? List two
differences.
57.
Name the layers of the wall of the alimentary tract ( inner to outer layer)
58.
Name the layers of the wall of the alimentary tract ( outer to inner layer)
59.
Make a sketch and label the ductal system of the liver, gall bladder and the
pancreas.
60.
Identify the substrate for the following enzymes: Lipase; trypsin; amylase
61.
List three characteristics of enzymes
62.
Is bile an enzyme? Why or why not?
63.
The three dimensional structure of a functional protein is altered by intense heat or by
nonphysiological pH even though peptide bonds might not be broken. Such inactivation is
called denaturation and denatured enzymes are nonfunctional. Explain why.
64.
Trypsin is a protease similar to pepsin, the protein digesting enzyme of the stomach.
Would trypsin work as well in the stomach? Explain your answer