Semilunar valves
A) are between the right atrium and right ventricle.
B) are between the left atrium and left ventricle.
C) are where the IVC and SVC enter the right atrium.
D) are where the aorta and pulmonary trunk exit the heart.
D
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The bucky tray enables the grid to reduce _________ radiation from reaching the image receptor by blurring grid lines to make them less noticeable on a radiographic image.
Fill in the blank(s) with the appropriate word(s).
The amount of blood that returns to the heart during diastole is called:
A) cardiac output. B) preload. C) myocardial capacity. D) afterload.
The intrinsic rate of the AV node is:
A) set by the sympathetic nervous system. B) 15-40 bpm. C) 60-100 bpm. D) 40-60 bpm.
Dysrhythmia may present as:
A. bradycardia. B. atrial tachycardia. C. diastole. D. none of the above.