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    Question ID:   9456         Current Version: 1
Question: What is the classification and structure of blood vessels?
Category: Science > Biology
Keywords: artery, capillary, vein, classification, structure, blood vessels
Type: what
Rating:(0 ratings)    Views: 382    Discussions: 0   In Watch Lists: 1  

 
    Answer:

Blood vessels are the channels or conduits through which blood is distributed to body tissues. The vessels make up two closed systems of tubes that begin and end at the heart. One system, the pulmonary vessels, transports blood from the right ventricle to the lungs and back to the left atrium. The other system, the systemic vessels, carries blood from the left ventricle to the tissues in all parts of the body and then returns the blood to the right atrium. Based on their structure and function, blood vessels are classified as either arteries, capillaries, or veins.

Source: National Cancer Institute

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