| Lab 20 Small & Large Intestines: 1) Index 2) Things to Identify 3) Duodenum 4)Jejunum 5) Ileum 6) Appendix 7) Colon 8) Rectum 9) Rectal Anal Junction 10) Anus 11)Comparison of Structures 12)Practical |
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Appendix
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# 120 - Appendix, human, c.s., h - e
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Examine this slide of the "tonsil of the gut" first under low power. Note the absence of both plicae and villi. The triangular lumen contains some fecal material. The amount of lymphatic tissue in the mucosa is so large that it may mask the muscularis mucosae and extend into the submucosal layer. Compare the thickness of the appendix wall to other regions of the gastrointestinal tract. Is there a serosa or an adventitia? Are there crypts of Lieberkuhn (intestinal glands) present? Are goblet cells present? REFERENCES: Gartner, p. 291, Fig. 3 Ross, pp. 470, 492 - 493 DiFiore, pp. 206 - 207 Wheater, p. 270 |
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This is an image taken from the Appendix. There are three clues to identifying the Appendix. 1) Presence of Dense lymphoid tissue (red arrow) 2) Lack of villi, and very flat surface 3) fecal matter (stuff that looks like crud) in the lumen. If you see these three things, which are all see in this image, you know you are in the Appendix.
Red arrow - Lymphoid tissue
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Appendix |
