slides and their description of GIT normal tissues

1. GIT Module
Histology Labs
By
Ali Faris

2. Lab 1

4. tongue
• Lining
epithelium
• Papillae
• Von- Ebner
salivary glands
(minor serous)
• Skeletal muscles

5. tongue

7. filiform

8. Fungiform
• Histological features : taste buds
located on the apex of papillae
(superficial taste buds)

10. Histological features : lateral taste buds

12. Salivary glands
submandibular sublingual parotid

13. • Organ : salivary gland
• Type : submandibular gland
• Histological features : serous is
more than mucous acini
• Notes :
- Connective tissue separates the
salivary gland into lobules and
contain blood vessels and
interlobular duct.
- Interlobular duct is surrounded by
thick connective tissue
- Intralobular duct is surrounded by
serous
submandibular
seromucous

15. sublingual
• Histological features:
mucous is more than
serous
Interlobular
duct
Mucoserous
Connective
tissue (that
surrounded the
salivary gland)
Intralobular duct

17. •‫ال‬serous acini‫تكون‬nucleus‫بالسنتر‬
‫تكون‬ ‫و‬rounded..‫ال‬mucous acini
‫النيوكليس‬peripheral‫و‬flat

19. Intralobular
duct
Parotid gland
histological feature :only serous acini

20. Parotid gland
Parotid gland

21. Esophagus
• Histological features :
1. Stratified squamous
(non-keratinized)
2. Esophagus glands
that present in the
submucosa
Stratified squamous
Lamina propria
Muscularis mucosa
Submucosa
Esophagus glands
Muscularis externa

26. Lab 3

27. liver
• Histological features:
1. Central vein : in the center
of liver lobule
2. Liver lobule : separated
from other lobules by
connective tissue.
3. Portal area : which has
hepatic artery, portal vein
and bile duct.

28. Portal area
- venuole(surrounded
by very thin smooth
muscles)
-arteriole (very thick
smooth muscles
surrounded it)
- bile duct (lining by
simple cuboidal
epithelium tissue)

33. Gall bladder
• Histological feature :
lining by simple
columnar epithelium

35. Mucosa
Muscularis externa
serosa

37. pancreas
• Islets of Langerhans
(surrounded by serous
acini )
• Connective tissue that
separates acini of
pancreas and filled
with blood vessels

39. Pancreatic islet
‫خطا‬