From outside inward, the first layer of the heart is the two-part ____.
A) myocardium
B) pericardium
C) pleural
D) epicardium
Correct Answer:
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Q11: The SA node initiates an impulse between
Q12: _ is the cardiac muscle fibers' ability
Q13: Contractility is the transmission of the electrical
Q14: ECG waves combine in unpredictable ways to
Q15: The space between waves is called a(n)
Q17: The _ is a muscular layer that
Q18: The heart is served by a special
Q19: The heart lies within the thoracic cavity,
Q20: If the PR interval is shortened, it
Q21: The _ is considered the heart's outermost
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