Channel protein gates respond to all these stimuli except Oligands physical deformation of a cellular membrane water in the extracellular fluid chemical messengers changes in electrical potential (voltage) across a cellular membrane
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Step 1: Channel protein gates respond to ligands, physical deformation of a cellular membrane, chemical messengers, and changes in electrical potential (voltage) across a cellular membrane. Show more…
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The rapid repolarization of the membrane in an action potential is caused by none of the above opening of voltage-gated K+ channels in response to peak depolarization closing of the slow inactivation gates on Na+ channels opening of voltage-gated K+ channels in response to the initial threshold depolarization opening of voltage gated Ca2+ channels in the axon terminal
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In addition to neurons, muscle cells undergo depolarization, although smaller and slower than in the neuron, as a result of the activity of the acetylcholine receptor (a) The acetylcholine receptor is also a gated ion channel. What triggers the gate to open? (b) The acetylcholine receptor/ion channel is specific for $\mathrm{Na}^{+}$ ions. Would $\mathrm{Na}^{+}$ ions flow in or out? Why? (c) How would the $\mathrm{Na}^{+}$ flow through the ion channel change the membrane potential?
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