Electrical Activity in Nerves - A NERVE CELL MEMBRANE HAS A SPECIFIC CHARGE – THE RESTING MEMBRANE POTENTIAL - Two depolarizations can be summated (added together) to make an action potent

Question 1

<p>Two <u>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</u>&nbsp;can be <u>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</u>&nbsp;(added together) to make an action potential (AP).</p>

Answer 1

<p>depolarizations</p>

<p>summated</p>

Question 2

<p>When summated, two depolarizations will produce an AP&nbsp;<br></br>
&nbsp;only if their strengths add together to equal <u>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</u>, or \_\_\_\_\_\_\_&nbsp;mV.</p>

<p>&nbsp;</p>

Answer 2

<p>THRESHOLD</p>

<p>-55</p>

Question 3

<p>The&nbsp;minimum amount&nbsp;of depolarization&nbsp;needed to produce&nbsp;an action potential. &nbsp;What is it called?</p>

Answer 3

<p>Threshold</p>