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Multiple Choice
Which type of artery has the largest lumen diameter?
A
Elastic artery
B
Arteriole
C
Muscular artery
D
Capillary
Verified step by step guidance
1
Understand the structure and function of the different types of arteries listed: Elastic arteries, Muscular arteries, and Arterioles. Capillaries are not arteries but are small blood vessels involved in nutrient and gas exchange.
Elastic arteries, also known as conducting arteries, are closest to the heart (e.g., the aorta) and are designed to handle high-pressure blood flow. They have a large lumen diameter to accommodate this flow.
Muscular arteries, also known as distributing arteries, are smaller than elastic arteries and have a thicker muscular wall relative to their lumen size. Their lumen diameter is smaller compared to elastic arteries.
Arterioles are the smallest arteries that lead to capillaries. They have a very small lumen diameter and are primarily involved in regulating blood flow and pressure.
Compare the lumen diameters of these vessels: Elastic arteries have the largest lumen diameter, followed by muscular arteries, arterioles, and finally capillaries, which are not arteries but have the smallest diameter overall.