Find the odd one out, giving reason:
Arteries, capillaries, blood, veins
Reason: Arteries, veins and capillaries are types of blood vessels whereas blood is a constituent of circulatory system.
Concept: Blood Vessels of the Heart: Vena Cavae, Pulmonary Veins, Pulmonary Trunk, Aorta, Coronary Artery and Vains
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