SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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they start from the heart and goes to the body parts
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they have thick muscular walls
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they have small lumen
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they have valves
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Detailed explanation-1: -Arteries are more muscular and have smaller, rounder lumens (internal spaces) than veins. The artery lumen has a wavy endothelium, or inner lining, due to the configuration of elastic tissue beneath it. The endothelium is part of the tunica intima, the innermost layer of the artery wall.
Detailed explanation-2: -Final answer: The correct statement that describes arteries is they have thick elastic walls without valves inside, blood flows under high pressure and carries blood away from the heart to different parts of the body.
Detailed explanation-3: -Each type of vessel has a lumen-a hollow passageway through which blood flows. Arteries have smaller lumens than veins, a characteristic that helps to maintain the pressure of blood moving through the system.
Detailed explanation-4: -The final branches of the circulatory system are the capillaries. Blood capillaries have a very thin lumen for the proper exchange of nutrients and gases.