In Cross Section, a Lymph Vessel Can Be Distinguished from Arteries

question 50

Multiple Choice

In cross section, a lymph vessel can be distinguished from arteries or veins because

• A)only the endothelial cells of the lymph vessel show nuclei.
• B)of the large number of smooth muscle fibers in the walls.
• C)the lymph vessel is usually not associated with arteries or veins, while the latter usually run together.
• D)the walls of the lymphatic vessels usually contract more during the sectioning and staining process, and usually appear to be smaller than other vessels of a similar size.
• E)the lymphatic vessels have the thinnest walls of all the vessel types.

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