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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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aryannaf aryannaf
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11 years ago Edited: 11 years ago, aryannaf
Part A

Why does the threshold increase when the interval between the stimuli decreases?

a. Potassium is flowing into the cell.
b. Some sodium channels have been inactivated and cannot be reopened immediately.
c. Calcium is flowing out the cell.
d. Sodium is flowing out of the cell.

Part C

When the interval between the stimuli decreases, _______.

a. a second action potential is generated until the interval reaches the absolute refractory period
b. a second action potential is generated until the interval reaches the relative refractory period
c. a second action potential is generated as long as the stimulus is above threshold
d. a second action potential is generated regardless of the stimulus and the interval
 
Source  Mastering A and P
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bio_manbio_man
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