Question

what is closed circulatery system give an example

Answer 1

Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness. In this type of system, blood is pumped by a heart through vessels, and does not normally fill body cavities.

Answer 2

there are 2 types
open circulatory means blood flow without blood vessels
and closed circulatory means blood flows in blood vessels
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