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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Medicines that overstimulate respiratory centers in the brain lead to
A. respiratory acidosis. B. respiratory alkalosis. C. metabolic acidosis. D. metabolic alkalosis.
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
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