The layer in the wall of a vein that is folded into valves is the:
A)lining
B)middle layer
C)outer layer
D)smooth muscle layer

Name: The layer in the wall of a vein that is folded into valves is the: A)lining B)middle layer C)outer layer D)smooth muscle layer
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Quizplus · Accepted Answer

The lining layer of a vein, also known as the tunica intima, is the layer that is folded into valves. These valves are crucial for preventing the backflow of blood, ensuring it moves in the correct direction back towards the heart.

The Layer in the Wall of a Vein That Is