Circuatory System Flashcards by Megan G | Brainscape

Q

What type of system is in mammals

A

closed, double circulatory system

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Q

How many times does the blood pass by the heart

A

Twice

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Q

What are the advantages of blood passing the heart twice

A

oxygenated and deoxygenated blood don’t mix
gas exchanged maximised because lungs re ice only blood with low and high o2 conc
separate circuits can operate at different pressures

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