Cells of the sinoatrial node ________ during the pacemaker potential.
A. repolarize fast
B. depolarize slow
C. depolarize fast
D. repolarize slow
E. depolarize slow and repolarize fast
Answer: B
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Polar R groups of closely positioned amino acids often enter into _________ with each other, which helps give a protein its three-dimensional shape.
A. hydrophobic interactions?B. ionic bonds?C. hydrogen bonds?D. van der Waal repulsions?E. sulfur-carbon bonds
Medicines that overstimulate respiratory centers in the brain lead to
A. respiratory acidosis. B. respiratory alkalosis. C. metabolic acidosis. D. metabolic alkalosis.
The finger like projections around the opening of the Fallopian tube are called:
a. infundibulum b. villi c. fimbriae d. ampulla
Decompensated shock is normally corrected by the body's homeostatic mechanisms
Indicate whether the statement is true or false