Veins are said to carry deoxygenated blood. Does this mean that there is no oxygen in venous blood? Explain your answer. Are there veins that carry highly oxygenated blood? Again, explain your answer. What color is most venous blood compared to most arterial blood?
What will be an ideal response?
Venous blood has some oxygen, but usually less that arterial blood, so it is only relatively deoxygenated. Pulmonary veins are an example of veins carrying highly oxygenated blood. Venous blood is usually dark red, arterial blood is usually bright red.
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