Lab 16 - Digestive System II
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Western University *
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Course
3309
Subject
Anatomy
Date
Jan 9, 2024
Type
Pages
2
Uploaded by ProfessorFog1333
Name: Student #: Lab Assignment 16: Digestive System II
, Histology Guide, Chapter 14
1.
Using Slide
MH 112 Fundic Stomach , Slide
MHS 251 Fundic Stomach , or Slide
MHS 247 Fundic
Stomach , draw
and label
seven
structures relevant to the lab. (4 marks)
2.
Using Slide MH 119 Ileum , draw
and label
nine structures relevant to today’s lab. (
5 marks)
Notes:
Please adhere to the guidelines explained in Histology 101
, which can be found under the Laboratory tab on our OWL site. Marks may be deducted if you do not read and follow these instructions.
3. Compare and contrast the morphology of the duodenum, jejunum, and ileum. Provide two
morphological differences between the regions of the small intestine. (1 mark) i. The ileum contains lymphatic nodule called Peyer’s patch
ii. The duodenum contains mucus secreting glands in the submucosa called Brunner’s glands
4. The tissue shown in Slide MH 109 Esophagus
is a section from which part of the esophagus? Briefly explain your reasoning. (1 mark) This section shows the middle 2/3 of the esophagus because it contains a mix of smooth muscle and striated skeletal muscle in the muscularis externa. 5. Using Slide MHS 258 Recto-Anal Junction , describe the changes in epithelium at the recto-anal junction. (1 mark) The epithelium changes from simple columnar epithelium with mostly goblet cells on the rectum side to stratified squamous non-keratinized epithelium on the anus side. And futher down to the anal canal it changes to stratified squamous keratinized epithelium. 6. Using Slide MHS 274 Colon (H&E) and Slide MH 123 Colon (H&E), draw
and label
five
structures relevant to to
day’s lab.
(3 marks)
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