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16 questions
Oxygen and carbon dioxide are transported between the blood and alveoli by way of
exocytosis and endocytosis by endothelial cells
diffusion from areas of higher concentration to lower concentration
pinocytosis using fluid-filled vesicles
active transport (using ATP) by protein carriers of endothelial cells
I have muscular walls, and a small lumen.
Artery
Vein
Capillary
Arteriole
I have a large lumen, I have thin muscular walls.
Artery
Vein
Capillary
Arteriole
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