During the cardiac cycle,
A) the P wave of the ECG occurs between the first and second heart sounds.
B) the QRS complex of the ECG precedes the increase in ventricular pressure.
C) the second heart sound coincides with the QRS complex of the ECG.
D) the third heart sound occurs during atrial systole.
E) the greatest increase in ventricular pressure occurs during the ejection phase.
B) the QRS complex of the ECG precedes the increase in ventricular pressure.
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The sagittal suture is a(n)
A. cartilaginous joint. B. fibrous joint. C. synovial joint. D. synchondrosis. E. amphiarthrosis.
Which event must precede all others during tissue repair?
a. Epithelia reproduce and migrate to the damaged area. b. Clotting occurs in the damaged area. c. Inflammation occurs near the affected cells. d. Fibroblasts produce collagen that strengthens the area surrounding the tissue damage.
If pure water and a solution containing a nonpenetrating solute are separated by a membrane that is permeable only to water, what would occur?
A. Water will diffuse by osmosis until all of the water is on the same side as the solute. B. No movement will occur between the compartments. C. Water will diffuse by osmosis toward the side with the solute, until stopped by opposing hydrostatic pressure. D. Water will diffuse by osmosis away from the side with the solute, until stopped by hydrostatic pressure. E. Water will diffuse by osmosis until the water concentrations in the two compartments become equal.
By what mechanism would an increase in venous return increase stroke volume?
What will be an ideal response?