Which statement is not accurate about the absolute refractory period?
a. Another stimulus, regardless of its strength, cannot initiate another action potential during this period
b. During this period, voltage-gated Na+ channels open, then close but are inactivated
c. Immediately following this period, the membrane can experience another action potential if the stimulus is strong enough
d. This period occurs during the after hyperpolarization phase of the action potential
e. This period ensures a unidirectional spread of the action potential down a nerve fiber
D
You might also like to view...
The abdominopelvic quadrants are formed by passing one horizontal and one vertical line through the
A. umbilicus. B. gluteal region. C. antebrachial region. D. crural region. E. patellar region.
Regardless of type, all levers follow the same basic principle:
effort farther than load from fulcrum = mechanical advantage; effort nearer than load to fulcrum = mechanical disadvantage. Indicate whether the statement is true or false
Ovarian estrogen production decreases during climacteric
Indicate whether the statement is true or false
Which of the following is an accurate comparison of skeletal muscle to smooth muscle?
A. Smooth muscle contracts more slowly but relaxes more rapidly. B. Smooth muscle depends on a nerve fiber to supply the calcium needed for contraction. C. Smooth muscle contracts and relaxes more slowly. D. Smooth muscle consumes more ATP to maintain a given level of muscle tension. E. Smooth muscle contracts more rapidly but relaxes more slowly.