Medicine, 20.07.2019 00:10 mitetwojr

Friction between membranes of the heart is reduced by:
a. serous fluid in the pericardial cavity
b. the epicardium.
c. a blood-filled sinus called the pericardium.
d. a cushion of air that surrounds the heart.
e. fluid between the epicardium and the myocardium

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Friction between membranes of the heart is reduced by:
a. serous fluid in the pericardial cav...