Because cardiac muscles are mechanically, chemically, and electrically connected to one another, cardiac muscle functions as a single enormous fiber, i.e., a ________.
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Q68: The _ border of the heart includes
Q69: The pericardial cavity contains _, which acts
Q70: Muscular ridges in the right atrium are
Q71: The exchange vessels in the cardiovascular system
Q72: There are many interconnections between the branches
Q74: The _ carries blood to and from
Q75: The primary function of the pericardial fluid
Q76: If the cusps of an atrioventricular valve
Q77: Blood exiting the left ventricle must pass
Q78: Cardiocytes are individual cardiac _ cells.
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