Teeth; Tongue and Saivary glands 

The picture " " can link to it's
corresponding histological photograph. 

The picture " " can link to it's
corresponding histological drawing.




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I. Teeth


  1. Ground section of permanent teeth 

( N-2-b, LS, Human, unstained )

»»  Crown
»»  Neck
»»  Root
»»  Pulp cavity
»»  Root canal ( Pulp canal )
»»  Enamel
@Enamel prisms ( rods )-a fine wavy striation
»»  Dentine
@Dentoenamel junction
@Dentinal tubules
@Interglobular spaces - black ( if air filled )
»»  Cementum
»»  Noncellular cementum-upper root
»»  Cellular cementum-lower root

   

II. Tongue 
( N-6-m, HE, monkey )




Stratified squamous epithelium

»»  Circumvallate ( Vallate ) Papilla
»»  Circumvallate ( Vallate ) Papilla
@Taste buds
@Circular furrow ( groove )
»»  Filiform papillae - keratinized, no taste buds
»»  Fungiform papilla - may not be found

Lamina propria

»»  Mixed glands

Muscle layer-with various directions

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III. Salivary glands


   1. Parotid gland

  ( NN-7-b, HE, human )

Lobules

»»  Serous acini
@Nucleus-spherical
@Cytoplasm-purple zymogen granules
@Lumen-hardly seen
@Cell boundary-not clear
»»  Intercalated ducts-smaller in size, 
@posses flattened or cuboid epithelium
»»  Intralobular ( or Striated ) ducts

Interlobular connective tissue

»»  Interlobular ducts ( or Excretory ducts )
@- columnar epithelium or stratified 
@columnar epithelia in some large ducts

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   2. Submandibular ( submaxillary ) gland 

(NN-8-b, HE, human )

Lobules

»»  Serous acini-predominant
»»  Mucous acini ( usually with serous demilune )
@Nucleus

- flattened, located on the basal portion 

@Cytoplasm-lightly stain

(due to loss of the mucinogen granules )

@Lumen-prominent
@Cell boundary - prominent
»»  Intercalated ducts
»»  Striated ducts

Interlobular connective tissue

»»  Interlobular ducts

Blood vessels

Nerves

   3. Sublingual gland 

(NN-9-b, HE, human)

Loubles

»»  Mucous acini - predominant
»»  Serous acini - few
»»  Intercalated duct - extremely short, may not be found
»»  Striated ducts

Interlobular connective tissue

»»  Interlobular ducts
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(may be found a group of ganglionic cells beside)

Blood vessels and nerves

Lymphatic tissue

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