What is the function of the auricles?
A. They form the serous membrane around the heart.
B. They supply oxygen-rich blood to the walls of the heart.
C. They are the lower chambers of the heart, which pump blood to the systemic and pulmonary circuits.
D. They are the upper chambers of the heart.
E. They allow the atria to expand while they are filling with blood.
Answer: E
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Which nucleus stimulates the muscles to produce the pattern of arm and leg movements associated with walking?
A. Amygdaloid body B. Caudate nucleus C. Putamen D. Globus pallidus E. Claustrum
A bomb calorimeter measures
A) only the food calories available to the human body. B) both carbon dioxide produced and oxygen consumed when a food sample is completely combusted. C) the oxygen consumed when a food sample is completely combusted. D) the heat produced when a food sample is completely combusted. E) the carbon dioxide produced when a food sample is completely combusted.
The relative refractory period occurs after the action potential is complete because of
a. the lingering inactivation of the voltage-gated Na+ channels b. the slowness of the voltage-gated K+ channels c. the action of the sodium-potassium pumps d. both a and b e. both b and c
All of the following are in the proximal row of carpals except the
A. pisiform. B. scaphoid. C. triquetrum. D. lunate. E. trapezoid.