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A graph that plots absolute magnitudes versus temperatures is called a/an __________ diagram.
Arterioles
Small diameter blood vessels that extend from an artery and connect to capillaries, playing a key role in regulating blood pressure and flow.
Veins
Veins are blood vessels that carry blood toward the heart, typically carrying deoxygenated blood, except for the pulmonary and umbilical veins.
Endothelium
The thin layer of cells lining the interior surface of blood vessels and lymphatic vessels, playing a key role in vascular function.
Valves
Structures in the heart and veins that maintain blood flow in one direction, preventing backflow.
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