The blood vessels are muscular tubes that carry blood, sugar, and oxygen to the parts of the body. Nervous impulses cause these tubes to expand or contract. Which body system does the blood vessels belong?

A.Cardiovascular System
B. Nervous System
C. Muscular System
D. Digestive System

The cardiovascular system is the system responsible for delivering blood to different parts of the body. ... The heart: A muscular pump that forces blood around the body. A closed system of blood vessels: These vessels include: Arteries: Vessels that carry blood away from the heart.

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