Slide 75: Thoracic Duct
This slide is a cross section through the thoracic duct.
- View the slide on low magnification. In this view, you should be able to see the ductus thoracicus and the surrounding connective tissue.
- The lumen of the ductus thoracicus.
- The epithelium lining the lumen.
- The different layers comprising the wall of the lymph vessel.
- The tunica intuna
- The tunica media
- The tunica adventitia
- The divisions of each of the layers
- The surrounding connective tissue.
- Name the epithelium lining the ductus thoracicus.
- List the layers and divisions of each layer comprising the wall of the ductus thoracicus.
- What tissue surrounds the ductus thoracicus?
- View the medium and high magnification slides of the ductus thoracicus. In this view, cellular detail should be visible.
- Identify the cells present in each layer of the lymph vessel.
- Identify the cells present in the surrounding connective tissue.
- Name the cells present in each layer of the wall of the ductus thoracicus.
- Are the cells orientated parallel or perpendicular to the direction of flow in the vessel?
- Make an annotated diagram of the complete ductus thoracicus, including the surrounding connective tissue. For a partial section of the wall of the ductus thoracicus, make a detailed drawing showing cellular detail and distribution of fibres. Indicate cross, oblique or longitudinal sections as appropriate. Add the function of each structure.
- On part of the diagram of the thoracic duct, indicate the distribution of elastic fibers.
- Describe each layer in the wall of the ductus thoracicus.
- How is the elastic fibres distributed and arranged?
- How does the layers seen in a lymphatic vessel correlate and differ from that of arteries? And veins?
- What is characteristic of each of the layers?
- Describe the amount, distribution and arrangement of the elastic fibers in the thoracic duct.
- Compare the structure of the thoracic duct with that of blood vessels.