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Which artery do you think is made of thicker muscle, the aorta or the pulmonary artery? why? refer back to your heart box to visualize the path of these vessels.
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Which artery do you think is made of thicker muscle, the aorta or the pulmonary artery? why? refer back to your heart box to visualize the path of these vessels.

User Karthick Kumar
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The aorta is thicker because it is the main artery that carries blood to the rest of the body
User Julesjanker
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