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Biology, 12.05.2021 22:00 hjeffrey168

PLEASE HELP! The purpose of the serous fluid in the pericardial cavity is

A) to carry critical nutrients like oxygen to the heart

B) do you provide CA2= to ions needed for muscle contractions

C) decrease friction between the layers of the heart as contractions

D) to lubricate the walls of the blood vessels to decrease resistance to blood flow

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PLEASE HELP! The purpose of the serous fluid in the pericardial cavity is

A) to carry...

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