Which of the following statements concerning Q waves on the ECG is most accurate?
A) Q waves are not a normal finding on the ECG.
B) The absence of a Q wave is a significant pathophysiological finding.
C) A Q wave is significant if it is 0.04 or more seconds wide.
D) A Q wave is significant only in the presence of chest pain.
C
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Sanctions for failing to achieve gender equity have been few and far between for U.S. high schools and colleges primarily because
A. the percentage of female students in schools has fallen dramatically. B. the U.S. Office for Civil Rights lacks the resources to investigate complaints. C. most schools count cheerleaders as athletes for equity purposes. D. very few complaints are files with the U.S. Office for Civil Rights.
Which of the following processes occurs during normal inspiration?
A. An increase in intrathoracic pressure forces air into the lungs B. The phrenic nerves stimulate the intercostal muscles to contract C. Air is pulled into the lungs when intrathoracic pressure decreases D. The diaphragm contract and ascends, increasing the chest diameter