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igor_vitrenko [27]
3 years ago
14

Do fish have an open or closed circulatory system? What does this mean?​

Biology
1 answer:
dedylja [7]3 years ago
7 0

Answer:

They have a closed circulatory system.

Explanation:

In an open circulatory system, blood vessels transport all fluids into a cavity. When the animal moves, the blood inside the cavity moves freely around the body in all directions.

Closed circulatory systems are different to open circulatory systems because blood never leaves the blood vessels. Instead, it is transferred from one blood vessel to another continuously without entering a cavity.

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Digestive -
Food and nutrients are absorbed in the small intestine. These nutrients are necessary for other body systems to maintain homeostasis. 

Excretory - 
Removes all waste from the body, kidneys filter chemicals, liver filters toxins
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