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7. From the arteries, blood flows into tiny, narrow vessels called _________________________________________.

User Khotyn
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The heart and blood vessels constitute the cardiovascular (circulatory) system. The blood circulating in this system delivers oxygen and nutrients to the tissues of the body and removes waste products from the tissues.

The blood vessels consist of

Arteries
Arterioles
Capillaries
Venules
Veins
All blood is carried in these vessels.
User Gauravphoenix
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Answer:

Arterioles

Step-by-step explanation:

Arterioles

User LXJ
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