Multiple Choice
Which type of blood vessel usually carries oxygen-rich blood?
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19. The Blood Vessels
Types of Blood Vessels
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Which type of blood vessel carries oxygen-depleted blood back to the heart?
A
Veins
B
Arterioles
C
Capillaries
D
Arteries
Verified step by step guidance1
Understand the function of each type of blood vessel: Arteries carry blood away from the heart, usually oxygen-rich; veins carry blood back to the heart, usually oxygen-depleted; capillaries are small vessels where gas exchange occurs; arterioles are small branches of arteries leading to capillaries.
Identify the direction of blood flow: Blood vessels that carry blood back to the heart are veins.
Consider the oxygen content: Veins typically carry oxygen-depleted blood, as they return blood from the body to the heart.
Recall the exception: The pulmonary veins are an exception as they carry oxygen-rich blood from the lungs to the heart.
Conclude that veins are the type of blood vessel that generally carries oxygen-depleted blood back to the heart.
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