back  

Slide 7: Tongue tip

    

Workbook tasks

Slide 7: The Tongue

H/E

This slide is a coronal section through the distal part of the tongue.

The pharyngeal tube (see slide 39) and the tip of the tongue is also used as examples to study serous, mucinous and mixed secretory units.

Identify:

  1. Microscopic

  • The different tissue types seen in this part of the tongue

  • Serous units

  • Mucinous units

  • Mixed units - serous demilunes

 

Draw and annotate:

The three types of units. Clearly indicate the differences in morphology.

A diagram of the tongue, showing the different tissues.

 

Reflection:
  1. Does this slide show the superior or inferior part of the tongue, and why?
  2. What glands are seen here?
  3. In what directions do the muscles run?
  4. Where do the secretions of the serous demilunes go?
  5. Compile a table to illustrate the differences between mucinous and serous units.

Mucinous

Serous

Shape of unit

Staining of cells in unit

Shape of nucleus

Lumen

 

Slides

Scanning electron microscope image of a pyralidae moth.

Microscope

Cross section through the tongue
Glandular tissue in the tongue
Glandular tissue in the tongue
Glandular tissue in the tongue

Very low magnification

Very low magnification of the tongue

Low magnification

Low magnification of the tongue

Medium magnification

Medium magnification of the tongue
Medium magnification of the tongue
Medium magnification of the tongue

High magnification

High magnification of the tongue
High magnification of the tongue

Archive

back
© februarie 2008 marius loots