Salivary glands &pancreas

5,912 views

Published on

0 Comments
12 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
5,912
On SlideShare
0
From Embeds
0
Number of Embeds
24
Actions
Shares
0
Downloads
0
Comments
0
Likes
12
Embeds 0
No embeds

No notes for slide

Salivary glands &pancreas

  1. 1. Types of Acini in Salivary Glands 1) Serous 2) Mucous 3) Mucoserous Serous demilune Crescent of Gianuzzi
  2. 2. Myoepithelial Cells (Basket Cells) Stellate-shaped cells which embrace acini & ducts as an octopus. Function ???
  3. 3. Duct System 1) Intercalated ducts: Simple cubical epithelium . 2) Striated (Intralobular) ducts: Cuboidal or low columnar cells with rounded nuclei. 3) Interlobular (Excretory) ducts: Columnar cells. 4) Interlobar ducts: Pseudostratified columnar. 5) Main Duct: Stratified Columnar then strtified squamous at its end.
  4. 5. Parotid Stroma is well developed Trabeculae (Septa) are thick & rich in adipocytes (A). Parenchyma: Mostly serous acini (S). S A
  5. 7. Intercalated Duct (arrow) It extends from a secretory acinus (S) Acini empty their secretions into these ducts, Lined with Simple cubical epithelium . Have acidophilic cytoplasm . S
  6. 8. S S S: Serous Acini A: Intercalated Duct: Simple Cubical B: Intralobular (Striated) Duct: Low columnar cells.
  7. 9. Intralobular (Striated) Duct: Arrow Low Columnar cells with rounded nuclei Cytopalsm is acidophilic with basal acidophilic striations .
  8. 10. Interlobar (Excretory) Ducts Pseudostratified Columnar Epithelium 2: C.T. Septa
  9. 11. Submandibular Gland: “ Human ” Seromucous Gland: In humans, 90% of its acini are serous & 10% are mucous and mucoserous. Main Duct: Wharton´s Duct . Opens on the sublingual papilla at the side of the tongue on the floor of the mouth cavity.
  10. 12. Seromucous Gland
  11. 13. Submandibular Gland “Dog” 1- Serous Secretory Unit 2- Mixed ,,,, ,,,,, 3- Intercalated Excretory Duct 4- Striated ,,,,, ,,,,, Mainly Mucous
  12. 14. Serous Demilunes from Submandibular Gland
  13. 17. Sublingual Salivary Gland Mucoserous gland Mucous acini predominate. Some mucoserous acini. NO pure serous acini.
  14. 18. SD: Serous demilune N: Nuclei of myoepithelial cells CT: Connective tissue MA: Mucous acini L: Lumen Ns: Nuclei of serous cells
  15. 19. Datashow Exam
  16. 20. Identify the type of acini. Mention their histological characteristics. (1)
  17. 21. (2)
  18. 22. (3)
  19. 23. * <ul><li>Identify the arrows: red, black and yellow. </li></ul><ul><li>b) Identify astreix. </li></ul><ul><li>c) What is this gland suggested to be? </li></ul>(4)
  20. 24. <ul><li>Identify the arrows: yellow, white & red. </li></ul><ul><li>b) This gland is --------------------------- </li></ul>(5)
  21. 25. <ul><li>Identify the numbers: 1, 2, 3, 4, & 5. </li></ul><ul><li>b) This gland is most probably --------------------- </li></ul>(6)
  22. 26. a) Identify the type of acini present in the field. b) What does the arrow point to? c) This gland is most probably ------------------------- (7)
  23. 27. <ul><li>What are the type of acini present in the field? </li></ul><ul><li>b) Identify the arrows: black, blue & red. </li></ul><ul><li>c) This gland is probably is ---------------------------- </li></ul>(8)
  24. 28. Stroma of Pancreas Trabeculae: Thin, delicate, divide the gland into ill-distinct lobes and lobules.
  25. 29. Parenchyma: (I) Exocrine Portion: Acini & Ducts.
  26. 30. Pancreas – Secretory acini w/ zymogen granules
  27. 31. Centroacinose Cells
  28. 32. (II) Endocrine Portion: Islets of Langerhans
  29. 33. Pancreas – Secretory acini & Islet of Langerhans Lobule
  30. 34. DataShow Exam
  31. 35. a) What does the arrow & arrowhead point to? b) Identify the organ. (2)
  32. 36. a ) This is a mixed gland. Identify the exocrine & endocrine Components. Mention the function of each. b) This gland is ------------------------------ (3)
  33. 37. (3)

×