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Transcript
Pre-Lecture Quiz, Chapter 25, Assessment of Cardiovascular Function
True/False
1. The sinoatrial (SA) node, with an inherent firing rate of 60 to 100 impulses per minute, is
considered the primary pacemaker of the heart.
2. Afterload refers to the degree of stretch of the ventricular cardiac muscle fibers at the end
of diastole.
3. Hypertension is defined as a systolic BP that is consistently greater than 140 mm Hg or a
diastolic BP greater than 90 mm Hg.
4. An elevated blood level of the amino acid homocysteine is believed to indicate a high
risk for coronary artery disease.
5. The patient undergoing nuclear imaging techniques with stress testing should be
instructed not to eat or drink anything for at least 12 hours before the test.
Fill-in-the-Blank
1. During _____________, the relaxation phase of the pumping action of the heart, all four
heart chambers relax simultaneously allowing the ventricles to fill in preparation for
contraction.
2. The apical impulse, formerly called the point of maximum impulse (PMI), is normally
palpable at the intersection of the midclavicular line of the left chest and at the
_______________ intercostal space.
3. The S1 heart sound results from closure of the __________ and tricuspid valves.
4. Turbulent blood flow caused by a narrowed or malfunctioning valve is called a
______________, which can be heard during auscultation of the heart.
5. Low-density lipoproteins (LDLs) are the primary transporters of cholesterol and
___________________ into the cell.