The thickest layer of the heart is the:
A) pericardium, the outermost layer, which is a fibrous membrane.
B) myocardium, the middle layer, which is the muscular layer.
C) endocardium, the outermost layer, which is the smooth outer surface of the heart.
D) epicardium, the innermost layer, which is watertight and prevents leakage of blood out into the other layers.
Correct Answer:
Verified
Q1: The electrocardiogram:
A) is referred to as an
Q2: As the impulse moves toward a positive
Q3: The heart:
A) is the pump of the
Q4: Which of the following is correct regarding
Q5: The sac that surrounds the heart:
A) Is
Q7: Structurally, the working myocardial cells are:
A) cylindrical,
Q8: The ventricles:
A) are the two upper chambers
Q9: The muscular wall that separates the right
Q10: The skeleton of the heart:
A) is a
Q11: The heart receives most of its blood
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