Juul Chapter 11 Question 18 Part A At which point of the illustrated action potential would voltage-gated Na+ channels be mostly open but voltage-gated K channels be mostly closed? Membrane potential (V) oooo Submit Request Answer Provide Fondhack
Part A Which of the following statements is true of both membrane potential responses shown in the graphs? Membrane potential (mV) Membrane potential (mV) Threshold Stimulus Stimulus 10 20 Time (ms) 30 102030 Time (ms) MD Both responses are examples of excitatory postsynaptic potentials (EPSPs). Both responses are examples of graded potentials. Both responses are examples of action potentials. Both responses are examples of inhibitory postsynaptic potentials (IPSPs). Submit Request Answer
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Para: (1) by B voltage -gated At point ® on the greaph, the Nat Channel will be open and voltage- gated at channel will be mostly closed- It is because after the neuron recieves on a stimulus, it undergoes depolarisatim. This depolarization / B-point in the greaph, if attained by opening of voltage-gated Nat channel, while Kt channels reemain closed. The reverese happens @ @ point, which causes reepolarization. A = Resting stage B: Wat Channel opens, kt channele closed ( Depolarization) c= voltage gated nat channel (deactivated) closes, Kt channels open R (Repolarization) Do preolonged opening of at dannels e Hypercolareization) E = only Nat kt at pare pump work , breing bringing back the membreane potential back to normal.
☺ b Both are examples of Explaination. stimulus is Both option of excitatorey, while greaded ® are greaph a potentials. incorrect because graph bI stimules is inhibitory in naturce- Now the potential are greaded potential because they are the result of passive electrical p reoperty of neareonal membreane. Hence they can be hyper polarizing or depolareizing. But the Ap. can and always lead to depolarization of membreane and follows all-ore- none preinciple.
