The second branch off the arch of the aorta is the
A. right subclavian artery.
B. brachiocephalic artery.
C. right common carotid artery.
D. left common carotid artery.
E. left subclavian artery.
Answer: D
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During the course of a ride on a roller coaster, what would be FALSE regarding your heart?
A. An increase in heart rate B. A decrease in the slope of the pacemaker potential C. An increase in the rate of cross-bridge cycling in ventricular muscle cells D. An increase in the amount of Ca2+ entering cardiac muscle cells E. A decrease in the duration of systole
The region surrounding the urethral opening, known as the neck of the urinary bladder, contains a muscular ________.
Fill in the blank(s) with the appropriate word(s).
Teleology is
a. the study of bony fishes. b. the study of life on other planets. c. the study of media for mass communication. d. explanations that presume a purposeful goal for evolutionary adaptations. e. the study of bald-headed men.
Which of the following counteracts the movement of bicarbonate ions from the RBCs?
A) the chloride shift B) Dalton's law C) ventilation-perfusion matching D) the Bohr effect