| 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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Anus
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| # 127 - Anus, monkey, h - e |
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The rectal mucosa is typical in that there are numerous cross sections through the intestinal glands there. The non-keratinized stratified squamous epithelium of the distal anal canal becomes keratinized at the anal orifice. Circumanal (apocrine sweat) glands, hair follicles and sebaceous glands may be seen near the anus. The muscularis externa forms the internal anal sphincter muscle at the rectoanal margin, while skeletal muscle forms the external anal sphincter. REFERENCES: Ross, p. 471, 494 - 495 DiFiore, p. 211, Fig. 13-10 |
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This is an image from the Anus. In it you can see the typical Stratified Squamous Non-Keratinized epithelium (blue arrows) which lines it. Along with other structure that makes it resemble the skin, such as Apocrine Sweat Glands (red arrows) and Adipose Tissue (green arrows). Blue arrows - Stratified Non-Keratinized Squamous Epithelium Red arrows - Apocrine Sweatgland Green arrows - Adipose Tissue
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Anus |
