Identify:

Macroscopic

• Orientate yourself with respect to the J-shaped cartilage.

• Identify with the naked eye the J-shaped cartilage of the pharyngeal tube. The glandular tissue can be found on the inside of the J-shaped cartilage. The glandular tissue of the tongue can be found between the bundles of muscle fibers.

Microscopic

• The lumen of the auditory tube

• The epithelium that lines the tube

• The laminal propria with mixed glands

• Muscle

• Serous units

• Mucinous units

• Mixed units - serous demilunes

Draw and annotate:

A diagram of the auditory tube and its surrounding tissue:

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

A diagram of the tongue, showing the different tissues.

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. What is the shape of the lumen?
6. What type of epithelium is found here?
7. What type of cartilage is found here?
8. What is characteristic of the glands?
9. What type of muscle is found here, and what is the anatomical name of this muscle?
10. Compile a table to illustrate the differences between mucinous and serous units.

Very low magnification

Medium magnification

High magnification

• Fig 039-001
• Fig 039-002
• Fig 039-003
• Fig 039-004