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Mt SAC

Mt SAC. Lab Unit 3 Histology. Tooth. Tooth. Tooth. Enamel. Dentin. Pulp. Tongue. Tongue. Taste bud. Tongue. Longitudinal section of skeletal muscle. Cross section of skeletal muscle. OMIT: Serous cells of salivary gland. Mucous acini of sublingual salivary gland. Tongue.

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Mt SAC

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  1. Mt SAC Lab Unit 3 Histology

  2. Tooth

  3. Tooth

  4. Tooth Enamel Dentin Pulp

  5. Tongue

  6. Tongue Taste bud

  7. Tongue Longitudinal section of skeletal muscle Cross section of skeletal muscle OMIT: Serous cells of salivary gland Mucous acini of sublingual salivary gland

  8. Tongue Longitudinal section of skeletal muscle

  9. Salivary Glands • You have one slide with all three glands on separate sections. Saliva consists of watery (serous) and mucous (thicker, sticky) secretions. • Sublingual • Contains only mucous cells • Parotid • Contains only serous cells (which secrete into ducts) • Submandibular (slide is labeled submaxillary) • Contains both mucous and serous cells

  10. Sublingual Salivary gland Mucous acinus with mucous cells inside Sublingual glands have only mucous cells

  11. Sublingual Salivary gland Mucous acinus with mucous cells inside Sublingual glands have mostly mucous cells

  12. Parotid salivary gland Ducts Serous cells Parotid glands have many ducts

  13. Parotid Salivary gland Duct Serous cells Parotid glands have many ducts

  14. Parotid Salivary gland Ducts Serous cells Parotid glands have many ducts

  15. Parotid Salivary gland Ducts Serous cells Parotid glands have many ducts

  16. Submandibular Salivary Gland Duct Serous cells Mucous acinus with mucous cells inside Submandibular glands have both mucous cells and ducts

  17. Submandibular Salivary Gland Duct Serous cells Mucous acinus with mucous cells inside Submandibular glands have both mucous cells and ducts

  18. Submandibular Salivary Gland Duct Serous cells Mucous acinus with mucous cells inside Submandibular glands have both mucous cells and ducts

  19. Small Intestine • Duodenum • Jejunum • Ileum

  20. Duodenum Villus Plica Plica Plica are the folds into the intestine. Villi are the finger-like projections into the lumen. Plica and villi are found in all three parts of the small intestine.

  21. Duodenum Adventitia Muscularis externa Mucosa Submucosa

  22. Duodenum Villus The villi of the duodenum are short and fat Brunner’s glands Brunner’s glands are only found in the duodenum. They produce bicarbonate to deactivate the acidity of the chyme from the stomach.

  23. Layers of the Small Intestine • Mucosa • Villi are located here • Submucosa • Brunner’s glands are located here (duodenum only) • Muscularis externa • Made of smooth muscle to push food along • Serosa (or adventitia) • Made of loose connective tissue

  24. Duodenum Villus Muscularis externa Brunner’s glands Mucosa Serosa Submucosa

  25. Jejunum Villus Plica

  26. Jejunum The villi of the jejunum are tall and skinny Villi

  27. Jejunum Serosa Muscularis externa Submucosa Mucosa

  28. Ileum Villus Plica

  29. Ileum Villi The villi of the ileum are not individually separate

  30. Ileum Mucosa Submucosa Muscularis externa Serosa

  31. Colon

  32. Colon

  33. Colon Villus Goblet Cells The villi of the colon are blending together and are full of goblet cells

  34. Colon Goblet cells

  35. Colon Mucosa Submucosa Muscularis externa Serosa

  36. Appendix

  37. Appendix Lymphatic nodules

  38. Appendix Mucosa Submucosa Muscularisexterna Serosa

  39. Liver Hepatic lobules Central vein Hepatic triad (artery, vein, bile duct)

  40. Liver Lobule Hepatocytes Central veins Sinusoids

  41. Central vein Hepatocytes Hepatic triad Sinusoids

  42. Hepatocytes Hepatic triad Sinusoids Central vein

  43. Central vein Hepatocytes Sinusoids

  44. Gallbladder

  45. Gallbladder

  46. Gallbladder Mucosa Submucosa And Muscularis externa blended in one layer Serosa

  47. Gallbladder

  48. Gallbladder

  49. Gallbladder Mucosa Submucosa And Muscularis externa blended in one layer Serosa

  50. Pancreas Acinar cells (secrete digestive enzymes and bicarbonate) Islet of Langerhans (secretes insulin)

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