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tst 2 quiz

Terms in this set (159)

Which is the correct term for the inner lining of the heart?
Endocardium
Which term refers to the muscle of the heart?
myocardium
The outer layer of the heart is a serous layer that is separated from the partietal pericardium by small space and pericardial fluid. Which of the following is one of the names for the outer layer of the heart?
Epicardium
The outermost layer of the serous pericardium is called the _________________.
Parietal layer
The pacemaker of the heart is the ___________________.
the SA node (The sinus node)
Which portion of the Cardiac Conduction System carries the impulse into the interventricular septum?
AV bundle (Bundle of His)
Which part of the cardiac conduction system directly stimulates the ventricular muscle cells to contract?
Purkinje fibers
Which part of the cardiac conduction system temporarily delays the impulse?
AV node
Which valve prevents backflow into the left ventricle?
Aortic valve
Which valve prevents backflow into the right atrium?
Tricuspid valve
Which terms refers to a decrease in blood flow to an area of tissue, such as the heart muscle?
Ischemia
A __________ refers to death of heart muscle cells.
Myocardial Infarction
Wild and uncontrolled contractions of the heart, which prevent the heart from pumping effectively is known as __________________.
Fibrillation
Which term describes an area other than the SA node generating an impulse that leads to a premature contraction?
Ectopic focus
Normal heart sounds are caused by which of the following events?
closure of the heart valves
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