Low threshold voltage gated sodium channels are located closer to the soma

Low threshold voltage gated sodium channels are

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Low threshold voltage-gated sodium channels are located closer to the soma region than the high threshold sodium channels. a) True b) False Question 37 Your answer is CORRECT. Forward propagating spike is produced by high threshold voltage-gated sodium channels located in the axon initial segment. a) True b) False Question 38 Your answer is CORRECT. Resistance is inversely propotional to conductance. a) True b) False Question 39 Your answer is INCORRECT. Roderick MacKinnon used voltage clamp to study the actions of TTX on sodium conductances. a) True b) False Question 40 Your answer is CORRECT. In inside-out patches the cytoplasmic side of the protein is exposed to the external solution. a) True b) False Question 41 Your answer is CORRECT. Pick the correct association for the above graphs.
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a) A - sodium current reversal. b) A - potassium current reversal. c) A - calcium current reversal. d) B - chloride current reversal. e) B - potassium current reversal. f) B - sodium current reversal. Question 42 Your answer is CORRECT. Choose the correct answer based on these graphs. In this Ohmic (linear) setting, which might be (the closest to resemble) the IV plot for a potassium channel?
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a) A b) B c) C Question 43 Your answer is CORRECT. Choose the correct answer based on these graphs. Which IV plot shows an outward current rectification?
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a) A b) B c) C Question 44 Your answer is CORRECT. The top graph illustrates that a depolarizing current was injected into a cell. In the bottom graph, pick the sustained outward potassium current curve marked by the appropriate letter and arrow. a) A b) B Question 45 Your answer is CORRECT. In this cytoarchitectural map created by Brodmann: which numerically labelled region of cerebrum represents Broca's area? a) Area 10 b) Area 7
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c) Area 21 d) Area 44 Question 46 Your answer is CORRECT. Which one of these symbols represents capacitor? a) A b) B c) C Question 47 Your answer is CORRECT. Pick the correct statement about this illustration. a) This illustrates oligodendrocyte myelination characteristics of the central nervous system (CNS) b) This illustrates oligodendrocyte myelination characteristics of the peripheral nervous system (PNS) c) This illustrates Schwann cell myelination characteristics of the CNS d) This illustrates Schwann cell myelination characteristics of the PNS Question 48 Your answer is CORRECT. Which area of this channel protein will contain a voltage-sensor?
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a) A b) B c) C d) D Question 49 Your answer is CORRECT. Which area of this channel protein will contain the ionic selectivity filter? a) A b) B c) C d) D Question 50 Your answer is CORRECT. During the membrane depolarization, the circled numbers below the bottom trace indicate the following about this sodium channel's dynamics:
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a) 1 - channel is open b) 2 - channel is closed c) 3 - channel is open d) 3 - channel is inactivated e) 4 - channel is inactivated
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