Which of the following features is NOT common to both lymphatic collecting ducts and veins?
A
anatomical distributions of each vary among individuals
B
transport of chyle
C
a wall made of three tunic layers
D
the presence of valves
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1
Understand the structure of lymphatic collecting ducts and veins: Both have a wall made of three tunic layers, similar to the structure of blood vessels.
Recognize the presence of valves: Both lymphatic collecting ducts and veins have valves to prevent backflow of fluid, ensuring unidirectional flow.
Consider the anatomical distribution: The anatomical distribution of both lymphatic collecting ducts and veins can vary among individuals, meaning their locations and paths can differ from person to person.
Identify the unique feature: The transport of chyle is a function specific to the lymphatic system, particularly the lymphatic collecting ducts, and is not a feature of veins.
Conclude which feature is not common: Since the transport of chyle is unique to the lymphatic system and not a feature of veins, it is the feature that is not common to both lymphatic collecting ducts and veins.