The upper chambers are:
a. discharging chambers
b. called ventricles
c. receiving chambers
d. both A and B above
c. receiving chambers
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If the sodium-potassium pump was inhibited by a drug such as digitalis, what would happen to the membrane potential of the cell?
A) The membrane potential would slowly decrease. B) There would be an instant loss of membrane potential. C) There would be an instant decrease followed by an increase in membrane potential. D) The leak channels would be disrupted
The region of the sarcomere that contains both actin and myosin myofilaments is called the
A. M line. B. A band. C. H zone. D. I band. E. Z disk.
Olfactory adaptation occurs when odorant receptors become _____
A. saturated B. destroyed
A heartbeat is started by what structure?
A. Sinoatrial node B. Atrioventricular node C. Atrioventricular bundle D. Purkinje fibers