Predict the nature of an ECG recording when the atrioventricular node becomes the pacemaker.
A. There would continue to be a normal sinus rhythm.
B. The P wave would be much larger than normal.
C. The rhythm would be slower.
D. The T wave would be much smaller than normal.
Answer: C. The rhythm would be slower.
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In this view of the larynx, what structure does number 2 indicate?
A. Tracheal cartilage B. Thyroid cartilage C. Hyoid bone D. Cricoid cartilage E. Epiglottis
After suffering a stroke, Alexandra finds that she cannot move her right arm. Where might one expect stroke damage to have occurred?
What will be an ideal response?
Phospholipids have a hydrophilic end which is
A. polar and water-soluble. B. nonpolar and water-soluble. C. polar and water-insoluble. D. nonpolar and water -insoluble.
Visceral smooth muscle
A. contracts only when stimulated. B. may contain groups of cells that function as an independent unit. C. does not function as a unit. D. occurs in sheets and exhibits numerous gap junctions. E. All of these choices are correct.