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Specimen Nr. 04A

Specimen:

Lingual tonsil (Human being)

Staining:

Hopa

Magnification:

10x

Important structures :

1.Nonkeratinized stratified squamous epithelium of tongue
2.Secondary follicle
3.Germinal centre of a secondary lymphoid follicle
4.Corona of a secondary lymphoid follicle
5.Interfollicular area
6.Seromucous end piece of gland
7.Skeletal striated muscle of tongue
Das mehrschichtige unverhornte Plattenepithel des Zungengrundes senkt sich kryptenartig in die Tiefe. Unter den relativ flachen Krypten liegen lymphatische Gewebsballen, die sog. Zungenbälge. An manchen Stellen durchdringt lymphatisches Gewebe das Oberflächenepithel, an anderen bildet es Sekundärfollikel mit Keimzentrum und Korona. Differentialdiagnostisch ist die Tonsilla lingualis von der Gaumenmandel (Tonsilla palatina) durch die verschieden angeschnittene Skelettmuskulatur und zahlreiche seromuköse Drüsenendstücke zu unterscheiden.

Legende:

Nonkeratinized stratified squamous epithelium of tongue
Secondary follicle
Germinal centre of a secondary lymphoid follicle
Corona of a secondary lymphoid follicle
Interfollicular area
Seromucous end piece of gland
Skeletal striated muscle of tongue

Lingual tonsil[bu]

1. Stratified squamous epithelium
2. Epithelial invagination
3. Lymphocytic diapedesis
4. Lymphoid nodule
5. Mucous salivary gland
6. Excretory duct

HOPA

Structures Colour
Nuclei brown
Cytoplasm grey-blue
Connective-tissue fibres
- Collagen
- Reticular
- Elastic
blue
blue
-
Myocytes grey-blue to grey-green
Erythrocytes yellow-orange

Dyes:

HOPA = Hemalaun, Orange G, Phosphormolybdenic acid, Aniline blue

Cell nuclei are stained with hemalaun or Weigerts iron-hematoxylin and then counterstained with a dye mixture of orange-phosphormolybden with aniline blue.

Am Übergang vom Mund in den Rachen (Pharynx), im Bereich der Zungenwurzel (Radix linguae), liegt die unpaare Zungenmandel (Tonsilla lingualis), ein lymphoepitheliales Organ. Antigene aus der Mundhöhle treten in Kontakt zu ihr und führen zur Bildung von Sekundärfollikeln mit Keimzentrum und Korona. Die Zungenmandel hat keine afferenten Lymphgefäße.
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Magnification:

10x

Magnification:

25x

Magnification:

100x

Magnifications
Nonkeratinized stratified squamous epithelium of tongue
Nonkeratinized stratified squamous epithelium of tongue
Secondary follicle
Germinal centre of a secondary lymphoid follicle
Corona of a secondary lymphoid follicle
Interfollicular area
Seromucous end piece of gland
Skeletal striated muscle of tongue

HistoNet2000 - Help

1. Organization of the screen surface

Right side: histologic specimen
Left side: information about the specimen (above) and general program functions (below)

2.Histologic specimen

Pull the mouse across the histologic specimen for training purposes. A small square with exclamation marks (dynamic labels) will appear where there is an important structure. You should then decide what structure this could be. To check your result, simply click the appropriate square, and the correct label will appear. The option “marked” allows you to see all labels for all structures simultaneously. These can be removed by clicking “unmarked”. This reactivates the dynamic labels.

3. Complementary information

Info: general information about the specimen, as well as a list of the dynamic labels
Drawing: schematic drawing of the specimen
Staining: information about the staining method for this specimen
Knowledge: short texts with basic histologic information, presently deactivated

4. General Program Functions

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Help: Instructions for Use appear
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