Question: Below Is A Labeled Action Potential (AP), This Question Refers To Number Labeled In The Picture Use The Above Photo To Answer The Following. Select The Correct Answer Within The Brackets To Complete The Sentance Correctly 1) The Vm Here Is [“-55 MV”, “-65 MV”, “-60 MV”, “-50 MV”] And Its Name Is [“resting”, “threshold”, “equilibrium”, “pi”] 2) The Event …
Below is a labeled Action Potential (AP), this question refersto number labeled in the picture
Use the above photo to answer the following. Select the correctanswer within the brackets to complete the sentance correctly
1) the Vm here is [“-55 mV”, “-65 mV”, “-60 mV”,”-50 mV”] and its nameis [“resting”,”threshold”, “equilibrium”, “pi”]
2) The event occurring here is [“an IPGP”, “a dGP”, “an IPSP”,”an hGP”]
3) The channel event taking place here is [“the opening of theK+ voltage gated channels activation gate”, “the opening of the Na+voltage gated channel’s activation gate”, “the closing of theinactivation gate of the Na+ voltage gated channel”, “the K+voltage gated channel is starting to close”]
4) The direction that the membrane potential is going here iscalled [“repolarization”, “hyperpolarization”,”depolarization”, “polarization”]
Between 3) and 5) this is called [“Phase 2”, “Phase 3”, “Phase1”, “Phase Vm”] and it takesonly [“1-15 msec”, “2 msec”, “3 msec”, “1 msec”] to complete.
5) The channel event that takes place here is [ Select ] [“the Na+ voltage gated channel’sactivation gate closes”, “the Na+ voltage gated channel’sinactivation gate swings closed”, “the Na+ voltage gated channel’sinactivation gate opens”, “the K+ voltage gated channel closes”]
6) At the same time #5 occurs, this channel event occurs:[“opening of the Na+ voltage gated channel’s inactivation gate”,”opening of the Na+ voltage gated channel’s activation gate”,”opening of the K+ voltage gated channel”]
7) The direction that the membrane potential is moving here iscalled [“repolarization”, “depolarization”, “hyperpolarization”,”polarization”]
There is a black box before #8, this is the Vm where [“the Na+voltage gated channel’s activation gate closes and its inactivationgate opens”, “the K+ voltage gated channel starts to open”, “the K+voltage gated channel resets”, “the Ca2+ voltage gated channelopens and allows exocytosis of neurotransmitters”]
8) The channel event that occurs here is [“the K+ voltage gatedchannel is fully closed”, “the Na+ voltage gated channel’sactivation gate is now opened and the inactivation gate is nowclosed”, “the voltage gated K+ channel starts to close”]
9) The channel event that occurs here is [“the K+ voltage gatedchannel is now fully closed”, “the K+ voltage gated channel startsto close”, “the Na+ voltage gated channel is reset”]
10) The Vm gets here using [“all the voltage gated channels areirreversibly inhibited so cannot open again”, “the action of leakchannels and pumps (primary active transporters)”, “the Vm ishyperpolarized so a suprathreshold stimulus would be needed tocause another AP”]
Between #8 and #10 we call this Phase 3 [“Polarization”,”Hyperpolarization (or After-Hyperpolarization)”, “Repolarization”,”Depolarization”]
The time during which an action potential cannot occur at all isbetween [Select ] [“5”, “4”, “2”, “3”] and [“7”, “8”, “9”, “6”] , this time period is calledthe [“Absolute Refactory Period”, “Total Refactory Period”,”Relative Refactory Period”] The timeduring which it is very difficult but possible to fire anotheraction potential is between [“8”, “9”, “7”, “6”, “10”] and [“10”, “8”, “9”, “7”, “6”] and this time period iscalled the [“Relative Refactory Period”, “Absolute RefactoryPeriod”, “Total Refactory Period”]
