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Questions and Answers
The heart muscle has two layers.
The heart muscle has two layers.
False
The great blood vessels provide a pathway for the entire cardiac circulation to proceed.
The great blood vessels provide a pathway for the entire cardiac circulation to proceed.
True
The heart has five hollow chambers, or cavities.
The heart has five hollow chambers, or cavities.
False
The heart is equipped with three valves.
The heart is equipped with three valves.
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The blood vessels have two coats or tunics.
The blood vessels have two coats or tunics.
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The cardiac cycle is the amount of blood pumped out by each side of the heart in one minute.
The cardiac cycle is the amount of blood pumped out by each side of the heart in one minute.
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The aortic arch is the part of the aorta that passes through the diaphragm into the abdominopelvic cavity.
The aortic arch is the part of the aorta that passes through the diaphragm into the abdominopelvic cavity.
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The inferior vena cava returns blood to the heart from all body regions above the diaphragm.
The inferior vena cava returns blood to the heart from all body regions above the diaphragm.
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The conduction system of the heart occurs randomly and irregularly.
The conduction system of the heart occurs randomly and irregularly.
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The venae cavae enter the left atrium of the heart.
The venae cavae enter the left atrium of the heart.
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