| Lab 18 Oral Cavity and Salivary Glands: 1) Index 2) Introduction 3) Things to Identify 4) Hard Palate 5) Soft Palate 6) Tonsils 7) Tongue 8) Parotid Glands 9) Submandibular Glands 10)Sublingual Glands 11) Comparison of Structures 12) Practical |
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Comparison
of The Tonsils
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| # 100 - Palatine tonsil, human, h-e |
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The tonsils are discussed extensively as part of the immune system. The palatine tonsils are covered with stratified squamous epithelium; the pharyngeal, with respiratory epithelium. In the lamina propria, locate primary and secondary nodules. Notice how the crypts are ringed with nodules. A partial capsule of connective tissue underlies the tonsils, walling them off and protecting the tissue below from the spread of infectious agents. Lymphocytes in lymphatic vessels leave the tonsil to seed other parts of the body with activated immune cells. REFERENCES:Gartner, pp. 184-185.. Wheater, p. 212, Fig. 11.19 DiFiore, p. 129, Fig. 9-5 |
| # 99 - Pharyngeal tonsil, human, h-e, 1.5 um |
| The pharyngeal tonsil (called the "adenoids" when enlarged) may obstruct the airway, causing breathing difficulties. What type of epithelium covers the pharyngeal tonsil? Are germinal centers present in your specimen? The crypts characteristic of the palatine tonsils are not present in the pharyngeal tonsil? |
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For Images of Both Pharygneal or Palatine tonsils refer to Lab 12 |